My day finally came, guys! I am a proud owner of a Neo Geo AES: Sorry about the quality. I am not too good with digital cameras.
You have chosen wisely. I can't imagine playing an AES without RGB or the Component mod to my system. Mine has a red LED since I tend to like the classic look of it. What games do you have for it? Are you going for the more common cheaper games like Magician Lord, Cyberlip, Fatal Fury Special, etc.. or the slightly higher priced games like KOF 96-2000, Real Bout series, Last Blade 1 and 2, etc...?
Some good easy to find and fairly reasonably priced games:
Nam 1975
Magician Lord
Baseball Stars
King of The Monsters
3 Count Bout (Fire Suplex)
Sengouku
Samsho 1 and 2
Fatal Fury 1, 2, and Special
Art of Fighting 1 and 2
World Heroes 1, 2 and 2 Jet
Games I highly recommend and aren't over $200 JP versions mostly:
Last Resort - $100 roughly
Sengouku 2 - $100 "
Baseball Stars 2 - $100 "
KOF 95 to 99 - range from $35-$70 these days
Real Bout Special and Real Bout 2 - $90 and $120
Last Blade 1 and 2 - $160 and $200 (These are a must buy if you own a Neo Geo. I can't imagine not having them. Watch gameplay videos on Youtube or something, you'll see why.)
Samsho 3 and 4 - $60 and $150
Art of fighting 3 - $180
I also have some games like Mark of The Wolves US and Metal Slug 3 JP that I recommend as great games. These are kinda up there on price, but I bought them when they came out.