Petrol stoves do run hotter than gas. I reckon you may find them cheaper than gas as well, not buying the "special colemans", by filling up at the garage.
You will find less mess and hassle with gas. We looked at this a few years ago when we had a tent. I ended up with gas due to little kids running round. I felt it was safer as no flammable liquids for them to spill.
------------- "You can not change the wind, but you can adjust your sails"
I must say derishel we had all your reservations but after checking out the coleman and reading the instructions it is alot safer than you think, it has to be else it wouldnt be allowed on the UK market..