Sanyo M1

I am considering buying this phone; however, I send and receive a lot of text messages (3,000 or more a month). I read earlier in the forum that you can only see the last 10 text messages sent.

* Is that right - you can only see the last 10 texts that you sent?
* How many text messages can you select at the same time?
* Also, has anyone else ever gone from a blackberry or pda (keyboard) to this phone and how does it compare in terms of speed to type a message?
* Can you sync your phone to your computer so you won't lose your contacts if something happens to your phone?
Thanks!
Andrea