And I use a GoPhone SIM in my N900, N950, and Blackberry 9700. I purchased the SIM on eBay and activated it in my N900 though. The SIM may have been locked to my N900 for the first six months; I couldn't tell. I didn't have any other GSM phones during that time.

I'm just warning people what might happen if they activate a GoPhone SIM in a cheap feature phone and then try putting the SIM in an N9. Finding the SIM had locked to an unwanted phone would be a let down.

More on topic, I rather wish T-Mobile would stay independent, as I like the direction they've been heading with their plans. If they'd offer similar deals with far fewer minutes--and establish a new roaming agreement with AT&T--I might just be convinced to sign two years of my life away.