Is there any major difference between them, or is it all just personal preferrence? I'll go the extra mile to get the better parts, but if its just everybody's own preferrence on them then I will stick to whatever Napa is carrying.
The felpro gaskets have a very soft surface that compresses quite a bit, it damages very easily during installation, and leaves the gosh awfullest mess to clean up if you have to take them off again. They are prone to leaking. They have been making them the same way for quite some time.
the Reinz gaskets on the other hand are a very firm gasket made to their latest technology. Reinz makes all the factory head gaskets for all of those extremely high tech diesels made in Europe these days ( where about 60% of all the cars on the road are diesels ), including the engines used in those fancy race cars. Most of the factory head gaskets that are used during initial assembly come pre coated with Hylomar ( seriously great sealer, that stuff is the factory sealer for Rolls Royce jet aircraft engines as well, the Racing formula is the same as the Aero formula ) so when replacing head gaskets , it's become a standard over there to spray coat them like the new style factory gaskets and it makes for an excellent seal. The combination of the Reinz gaskets which are sturdier and the Hylomar which unlike other sealers or gaskets with Orings that pull away and allow leakage during temperature cycling, the Hylomar stretches leaving a curtain of sealer even when a gap occours and then compresses back into place after the temperature cycle .
I've never used a Corteco gasket, but from what I understand, They have tried to follow that design with a sturdy core gasket and a full sealer coat , major diference being that the sealer coating doesn't adhere to the opposing surface, but is supposed to conform very well to irregular surfaces during installation, and not leave a mess when removed.