I got a Jetboil Sol Ti before my walk this weekend and I have to say it's a great bit of kit. I wasn't too keen on them before but now I own one I will be using it all the time.
As for stuff sticking I can believe it, not tried myself but I did do some rice in it and it simmered really well for that. I'll only ever be boiling water for brews, dehydrated meals or boil in the bag meals so not being able to do things like eggs and bacon won't be a problem.
The Jetboil website quotes 12 litres per 100g gas canister, not used that much so I can't comment on that. I have heard that if you wind it back 0.5-1 turns from full power it doesn't affect the boil time but saves fuel, it certainly doesn't affect the boil time by much if anything in my experience. One morning it was even -12C which is lower than it's rated specs and it worked fine with jetboil 4 season gas that was left outside of my tent overnight.
I'll be leaving my wood burner, meths and multifuel stoves at home 80% of the time now I think.