Tabletop Miniatures

My question here is if there are any rattlecan varnishes people recommend not from Citadel or Army Painter? I'm looking to speed up the varnishing but not all my FLGS have them in stock all the time.

I usually use a painted-on Army Painter Anti-Matte varnish, but lately I've found that process to be rather tedious. Additionally, it can cause issues with my Speedpaints 1.0.

Once I'm done with my bottle, I was considering spray-on varnishes. Now I know that we can use certain regular brand rattlecan primers, like Rustoleum, but I was wondering if anyone had a go-to rattlecan varnish they use that isn't from one of the "big" mini paint companies. (Like Rustoleum? or something?) I can hit a hobby store too if there's something there people like.

I've found there isn't a lot online about this topic. Some videos, sure, but they seem Europe-oriented, and we often have different products here in the U.S., particularly in these regular hardware store items. So I was looking for advice and thoughts.