I got the fry pan and large pot that went with the jet boil. So that's what I'll comment on.

The fry pan is great for frying fish. No hot spots and the flame the stove produces is about the right temp for frying in oil.

I didn't think the larger pot worked so good for simmering IMO. Not so much a problem with the pot as the stove. The stove seemed to not adjust down very well and consumed a lot of fuel. Not as thoroughly tested as the fry pan though. I have the original stove so there may be improvements since.

Jet Boil is best at quickly boiling water.