Can I use the Boost Mobile Unlimited Service with A Palm or Blackberry

[SidDavy88]

I have been browsing this thread, and I find it extremely difficult to get consistent answers about the compatibility issue. When I speak about compatibility I'm speaking in regard to the Unlimited Plan sim card(I assume they created new sim cards for this plan). What I've heard is that pretty much any Sprint (NYSE: S) phone (new nextel included), will work with boost sim cards. I'd like to purchase Treo 755p and use it with the new unlimited service, but I also heard BlackBerry (NSDQ: RIMM) will work with the service as well. Would you guys be able to list smart phones that will definitively work, or you could just tell me if the Palm (NSDQ: PALM) will work(i love that phone).
Hopefully this thread will be able to give some clarity to everyone else looking for compatibility answers.