You can use any regular size condom out there and should have a good fit.
Lifestyles, Trojan, and Durex and good popular brands that you can't go wrong with. Beyond Seven is nice - gives more of a snug fit with a little better sensitivity (I think they're Japanese).
Do a search on the web for condom vendors - there are plenty out there that have good descriptions and great deals on condoms that they can mail to you. I would post the addresses to some, but its not allowed here.