Ive used cometics, and felpro MLS gaskets. I like the felpro better, Only thing with the felpro is you have to put a dab of silicone on the top 4 corners of the gasket so it seals the lifter valley. The gasket is a little short
How much will you be "boosting" exactly? If you plan on moving a ton of air through the engine, good head bolts/studs are as important as the gasket you use.
If its a moderate amount (under 10psi or so) then just the gaskets will be fine.
From a engine builders point of view, I prefer the Fel-Pro over the Cometic, I have had a few sets leak between the layers which left a bad taste in my mouth.