Now THIS will make me order Cingular service:

http://www.engadget.com/2006/01/04/s...hsdpa-handset/

I use the Option GT MAX card. GREAT speeds (in cities with HSDPA / UMTS).
I reccomend this card (quad band, intl roaming).

FYI an important thing with ANY CINGULAR 3G CARD!!!!!
Remember to order your new SIM card and that the rep you order it from is from the data dept. There are 3 cards (not including the ex-ATT cards) and your service will be MUCH slower without the correct one. You NEED the "64K Smartchip 3G SIM" sometimes known in the Cingular system as a "UICC SIM." Otherwise be prepared for the 3 hours of headaches I had to deal with!

All that being said I LOVE CINGULAR 3G!

BTW I forgot to come post here. I DID experience the problems mentioned earlier in the thread with connection problems while in Las Vegas. The problem was/is that Cingular has multiple networks and the SIM is homed to the 310-41 network. In some places, Cingular is running 3G on the 310-38 network which confuses the hell out of the SIM/card as it's told to prefer 3G, but also to prefer 310-41. The end result is that it took forever to find service (if it did at all). Supposedly it's been fixed but I haven't been back that way to check. Here in Texas, where I've used it recently, it works as well as it always has.