Got a M600i myself a few weeks ago now (lack of patience waiting for P990). Very impressed with it indeed - so much so that I am questioning my need for the P990i - the only added thing it really offers me is WiFi. (I'm not bothered about a camera), and I'm not sure how much use I'd really make of it even though I'd love to have it.
The M600i form factor is lovely - realy nice size and is really nice and slim. The QWERTY keypad takes a little getting used to, but works well. There aren't any hardware soft keys on the phone itself, but three options appear at the bottom of the screen which can easily be selected with your finger for one handed use. The scroll wheel and back button make one handed use very easy.
One of the guys over at My-Symbian has put together a very good review
here.
Exchange Activesync push email works pretty well, although the BlackBerry Connect client is also now available but haven't heard any feedback yet.
It is available both SIM free and on contract deals, but not officially through the networks yet, although the big advantage there is that it is not polluted with their branding and whatever else they do to break it. I have heard talk of the official Voda version being available, but haven't seen it and AFAIK is will be farily heavily branded.
No doubt I'll end up with a P990 in the end - I know I won't be able to resist, although the place I preordered has just upped their price for it by £100 although my order status info still lists the original price I preordered at back in April.
