I’ve an MSR kettle and a couple of their mugs too. Firstly, you can fit a gas canister in the kettle along with a pocket rocket and a cut down spork. Secondly, you can fit a Mug into it also, along with a canister. The lid is very secure, the rim (he-he) is not sharp nor is the rim (he-he) on the mugs. The Mug also is usefull for uber light trips as it will go directly onto the stove. In short, from seeing an alpkit one, the MSR is better.
I also have a Titanium Coffee Press from Snowpeak, that fits everything except a canister.