Theres probibly alot of those questions on the forum yet but i'd like to ask a little more..
Im pretty sure i'll go for the 6850. i'm gonna get a 6-core so the physx shouldn't be a problem should it?
else i should reconsidder the gtx 460
my main question was
Saphire or MSI Cyclone?
is the cyclone really worth the extra bucks or should i get a regular Saphire and overclock it?
PhysX is done on an Nvidia GPU and Physics is done on a CPU. Yes teh Cyclone is worth the extra, i would get a Hawk card if possible its pretty much teh best 460 there is as far as overclocking goes. It depends if you want the fastest pre overclocked card or one that will OC well.
The Cyclone card is a good comprimise of the two.