Help buying an XBox 360

I'm thinking about buying an XBox 360. Looking at listings on Amazon and Game Stop and eBay is all very confusing. There are lots of different versions. Can I buy a random used one and be fine? Are the older ones obsolete in some meaningful way?

I figure that it's going to be replaced in a year or so with the next generation, so I probably won't play a whole lot of games, so I don't really need a lot of storage space. 20GB seems like a reasonable amount. This one catches my eye.

Thoughts?

Fun Pub Brain Dump

FP added a bunch of images to their DeviantArt page: Link

The most interesting things are perhaps exclusive toys that were rejected: Fangry from BM Beast Changer and First Aid from Cybertron Red Alert. Personally, I'm not too disappointed that they never saw production. Nonetheless, I'm glad to get a chance to see them.

Club Magazine #39 cover

Revealed on Twitter

Prime Optimus with an ugly chest? I'm clearly missing something.

Hasbro Investor Event

I didn't see a topic on this.

TFW coverage

* Transformers goes preschool again
* Robot Heroes are back for DOTM
* DOTM prequel video game
* That Chinese MMO thing

Stuff for Sale

All toys are from my personal collection and have been treated with care. Most include instructions and/or card back -- inquire and I'll check to see if I have them for a specific toy. All are loose and complete unless otherwise indicated.

Make me an offer. Everything will ship USPS Priority Mail because I've got free Priority Mail boxes from the post office.

2007 MOVIE
Barricade (legend)
Brawl (deluxe)
Bumblebee (legend 70s Camaro)
Bumblebee (original deluxe Camaro concept)
Evac
Jazz (legend)
Megatron (legend)
Megatron (Premium leader)
Megatron (voyager)
Optimus Prime (legend)
Optimus Prime (original leader)
Optimus Prime (Target exclusive Robovision)
Ratchet (legend)
Robot Heroes (gallon bag full)
Starscream (Target exclusive Deep Space)
Thundercracker



CYBERTRON
Blurr
Brakedown GTS
Clocker
Crumplezone
Cybertron Defense Red Alert
Cybertron Defense Scattorshot
Megatron (Legend)
Ransack GTS
Snarl
Sky Shadow
Skywarp (Legend, Starscream mold, SDCC 2005 exclusive)
Smokescreen
Swindle



ENERGON
Alpha-Q
Cyclonus (Armada redeco)
Downshift
Energon Starscream
Mirage
Demolishor (Armada redeco)
Prowl and Checkpoint
Tow-Line



GENERATION 1
Optimus Prime (Powermaster, excellent shape, not reissue)



PLAYSKOOL (BIG ADVENTURES, GO-BOTS)
Aero-Bot (mega jet)
Dino-Bot
Gorillabot
Mototron (black and green sports car)
Racer-Bot Alpha
Racer-Bot Beta (clear)
Speed-Bot (red and yellow sports car)
Strong-Bot (clear yellow cement mixer)
Strong-Bot (yellow and orange bulldozer)
Strong-Bot (yellow and orange dump truck)



POWER CORE COMBINERS
Bombshock with Combaticons
Skyburst with Aerialbots



REVENGE OF THE FALLEN
Arcee
Chromia
Demolishor (voyager)



TITANIUMS 3"
Bumblebee
Megatron (Beast Wars, no stand)
Optimus Primal (no stand)
Rodimus
Unicron



TITANIUMS 6"
Optimal Optimus



TONKA
Charlie Chopper (dead battery or broken electronics)
Policeman Pete



UNIVERSE (2003)
Blackarachnia
Blastcharge
Fireflight
Inferno (RiD Prowl redeco)
Longhorn
Nemesis Strika
Optimus Prime (RiD Spychanger)
Prowl (KB G1-colored Spychanger)
Prowl (Red Alert colored Spychanger)
Prowl (RiD)
Ransack (Battle in a Box)
Ratchet (X-Brawn redeco)
Ruination (jungle camo)
Skydive (BM mold)
Smokescreen (Battle in a Box)
Swerve (Armada Blurr redeco)
Stockade
Tankorr (BM Tankorr redeco)
Treadshot
Ultra Magnus (RiD Spychanger)


Now on eBay:
Titaniums lot
Universe lot
Universe lot
Universe lot
Powermaster Optimus Prime