Ive tried the following... in the following order as well..

YesSIM
My friend is using this. Its been working for 3+ weeks.

i-Smartphone 3G
Worked for 30 minutes. (Worked flawlessly for 30 minutes, but only 30 minutes)

Q-SIM from i-Smartphone2008 (i-Smartphone 3G replacement)
Worked for 3 hours. Then No SIM error.

Gevey-3G
Didnt work outta the box.

Virgin-SIM Normal
Working perfectly. Traveled over 20 km, 2 ways. Lol. Changing towers perfectly, running outta coverage for like 5-8 seconds, but coming back well.

Virgin-SIM Fast
Working perfectly. Traveled over 20 km, 2 ways again. Lol. Changing towers perfectly, never running outta coverage. not even at the places the Normal ran out of coverage.

I vote for Virgin-SIM's. Best solution.