if you plan on getting a Transcend card for use with a GSM TP2, be careful. There have been reports of Transcend cards not working well with the TP2. I personally experienced it, when my Class 6 8GB card would randomly disappear from the phone, or when music would skip during playback. Switched to a Sandisk Class 2 8GB that came with my BB Storm, and haven't experienced a single problem.
And also, note that the Transcend card worked great in my BB Storm, BB Bold 9700, LG Incite and Samsung BJII before this. Nothing wrong with the card, just with the TP2.