Does Iphone 4 or BB Torch work well with bluetooth in new 550i?

[romantik]

I paired my old Nokia E75 with my new 550i bluetooth. All is fine except I cannot accept incoming calls.
I understand that glitches like that are not uncommon. I need a new phone anyway and am looking for one.
Please, advise which [good] phones work smoothly with 550i. I am thinking about Iphone4 or BB Torch.
(Neither is listed on BMW website as a tested phone). And I am with Rogers.

Thanks!!