Hi Bunnerz,
I recommend the MSR stoves, either the Whisperlite 600 or the Dragonfly. I have the Whisperlite and used to use it for mountaineering all the time. It is a solid bit of kit and is field serviceable, you have to buy the kit separately.
A mate got me a gallon of aviation gas some time ago and the whisperlite went better than ever. I have read somewhere that automotive panel wipe is white gasoline without the £40 per gallon price tag of Coleman fuel.
Initially you seem to have to buy the stove and then the extras, service kit, fuel bottle etc. but it is all worth it in the long run. It is also worth mentioning that you also get a really good wind shield with the stove.
I am with Squidders regarding the cookware, I have the XPD Cookset and a Stowaway pan, both are excellent.
It is also worth mentining that MSR make a triangular base plate to attach to the stove to prevent it burning it's way through snow. I use mine to provide a stable base by packing it with stones etc.
Forget gas go with petrol, you know it makes sense.
Stewey.