Tank Sealer advice

I think Caswell's is the best sealer out there. What is the 2nd best? Caswells is out until Mid July and I need something now.

DO not tell me Red Kote either because it was a complete failure for me.

 

I like POR-15, i have used it on car and bike tanks. i dropped a drop on the floor and when it dried, i pounded it with a hammer and it barely changed shape

 

Those are the top 2 from everything I've read and had experienced people tell me, although I don't have an opinion in which order and have never used either one.

 

I've used Caswell a couple of times and it works well. I've heard POR-15 is about equal but I have no first-hand knowledge.

 

POR-15 seems to be leading here, any other opinions?