This is my attempt at a chaos cyber deck built on my budget. its still evolving but I would still like a second opinion. NOTE: This will not be legal until Absolute Powerforce.
Monsters:
3X Blue Thunder T-45
3X Dekoichi The Battlechanted Locomotive
3X Twin-Barrel Dragon
3x Cyber Dragon Zwei
2x Chaos Sorcerer
2X Cyber Eltanin
2X Shreddder
2X Krebons
1X Cyber Dragon
1X Psychic Comander
Spells:
3X Machine Assembly Line
2X Super Polymerization
1X Limiter Removal
1X Future Fusion
1X Overload Fusion
1X Emergency Teleport
1X Brain Control
1X Heavy Storm
1X Mystical Space Typhoon
Traps:
2X Bottomless Trap Hole
1X Trap Hole
1X Call of the Haunted
1X Mirror Force
1X Torrential Tribute
Monster Analysis:
The thing about this deck is that not all of the monsters need to be Machine-type. A good card to include in Cyber decks is Plaguespreader Zombie. Why? Well, he's a Tuner, which everybody likes, but more importantly, he can use his revival effect to stack that Cyber Dragon resting in your hand to the top of your deck. This lets you instantly summon Chimeratech Overdragon.
Any deck that includes Dekoichi has to play Black Salvo. The potential for a 1-card Black Rose is simply too good. He's such a powerful late-game card.
Since this is a budget deck, I won't use the powerful Dark Armed Dragon.
Also, I really don't see what's the point in using Shredder. Sure, he's a Machine, but he's weak and only EARTH. Not only that, but his effect is just a straight trade-off, and it doesn't gain any card advantage. Also, Krebons and Psychic Commander aren't too good in here. The only way to get them out is Emergency Teleport, and without Mystic Tomatos, they don't hit the field as often as you would like.
I also really want to remove Blue Thunder. You really don't need all that LIGHT stuff, and there is actually a much better monster I have in mind.
-3 Blue Thunder T-45
-3 Twin-Barrel Dragon
-2 Krebons
-2 Shredder
-1 Psychic Commander
-1 Emergency Teleport
+1 Plaguespreader Zombie
+1 Black Salvo
What was I doing?
Fortunately, I have a friend who topped a Regional using this deck (this was pre-Cyber Dragon Zwei and Eltanin too.) I managed to get the deck off of him and me and some other players made some adjustments to the deck. It tested pretty well, and I'll show you what we had. (It's still budget, so there's no real need to worry.)
The original used the Jinzo engine, gaining fast advantage. I'm worried that that may be out of your budget range, so instead we'll use a replacement. (Richard if you're interested in that deck I'll e-mail it to you.)
We need to add in more cards that allow better plays and domination of the field. I would have to say we go:
+1 Cyber Eltanin
There's no real reason not to use Cyber Eltanin.
In addition, we'll go with 1 copy of Card Trooper. This card serve as a replacement for the Dark Grepher engine in the original deck, and can mill stuff you want in the grave to the grave. It also sets up Cyber Eltanin plays.
I also said that I had a replacement for the fast and efficient Jinzo engine. We're going to be using 3 copies of Junk Synchron and 3 copies of Tuningware. This allows us to make some pretty quick Synchros. When you're done, you can dump Tuningwares for Eltanin. If you're worried about the DARK count (well, it's 8 or so, so you should be fine) use Dark Sea Rescue. (It's also less expensive.)
We'll round off this with 3 copies of Cyber Valley. Cyber Valley at 3 lets you play 3 copies of Machine Duplication (crazy combos with Junk Synchron) with impunity.
-3 Blue Thunder T-45
-3 Twin-Barrel Dragon
-2 Krebons
-2 Shredder
-1 Psychic Commander
-1 Emergency Teleport
+1 Plaguespreader Zombie
+1 Black Salvo
+1 Card Trooper
+3 Tuningware
+3 Junk Synchron
+3 Cyber Valley
You still have a good DARK count (3 Junk Synchron + 3 Dekoichi the Battle-Chanted Locomotive +1 Plaguespreader Zombie (sorry about this card being expensive) +1 Black Salvo) This makes 8 DARK monsters, which works fairly well. You can also remove Chaos Sorcerer for another I guess.
You also have a good LIGHT count (3 Tuningware + 3 Cyber Dragon Zwei + 1 Cyber Dragon) That's 7 LIGHT monsters, also a decent number for 2 Chaos Sorcerers, and I'm not counting Eltanin and Valley. Valley RFG's itself, and for Eltanin you should be winning the game the majority of the time you drop him.
Spell and Trap Analysis.
I would also play 2 copies of Foolish Burial. This works really well to dump Cyber Dragon Zwei as well as Tuningware. I would play this over Super Polymerization (I have a way to play Cydra Fusions I'll reveal later on.)
-3 Machine Assembly Line
-2 Super Polymerization
+2 Machine Duplication
+2 Foolish Burial
The secret tech we had yesterday was DNA Surgery. It's actually really good in here. You play DNA Surgery, and call Machine. Instant field wipe when you have Cydra or Cydra Zwei. It also wrecks Blackwings and Plants. (Stopping Icarus and Lonefire plays.)
I would cut Trap Hole (a card good against Blackwings) for DNA Surgery (even better against Blackwings.)
-1 Trap Hole
+2 DNA Surgery
Final Deck.
3X Dekoichi The Battlechanted Locomotive
3x Junk Synchron
3X Tuningware
3x Cyber Valley
3x Cyber Dragon Zwei
3x Cyber Eltanin
2x Chaos Sorcerer
1X Cyber Dragon
1x Black Salvo
1x Card Trooper
1x Plaguespreader Zombie
Spells:
2X Machine Duplication
2X Foolish Burial
1X Limiter Removal
1X Future Fusion
1X Overload Fusion
1X Brain Control
1X Heavy Storm
1X Mystical Space Typhoon
Traps:
2X Bottomless Trap Hole
2x DNA Surgery
1x Torrential Tribute
1X Mirror Force
1x Return from the Different Dimension