I've always used the Coleman stove fuel in the gallon metal can.
I'm on the same 20+ year old Coleman Peak 1 multi-fuel stove and have never had a fuel problem.

I do use a fine mesh fuel filter when filling stove, and you should take in consideration how old your fuel is and where you live IF your filling from a metal can?

I live in MI, so condensation in metal fuel cans is a issue. Never store your metal fuel can on a concrete surface as you'll get condensation in the fuel eventually. Keep it on a shelf, or switch to plastic fuel cans.
I've used fuel that has been in storage for at least a couple of years, never a problem. I do add a few drops of fuel stabilizer to can if it's sitting in the outdoor shed over the winter, especially if it's in the gallon metal can.

Coleman also makes a Premium stove fuel that comes in a red plastic bottle. Quart/litter size? More expensive than the stuff in the can, BUT it is it's own fuel bottle, so you don't have to use other fuel cans to carry it, only one to attach to your particular stove of choice.

I think dd is right. I believe most contaminates come from the filling/fueling process, not from the original source. A little fine mesh lined fuel filter will take care of that.

Another good idea is to add a few drops/ cap full of auto carb cleaner to say a 1/4 bottle of fuel and let the stove run until it's empty. Do it before your first trip and maybe after your last one. Will clean out the sludge and keep your stove running great ;)