Stuck on glue

What's the best-holding adhesive for gluing materials (various metals and plastic). Two-part epoxy? Hot glue?>>>

Thanks, guys. I'll give GG a try. It's readily available, I was thinking maybe the epoxy stuff they glue in bolts in concrete, or whatever sealant they glue carbon fiber jets together with, but don't have a clue where to find the stuff.

I've got a test of sorts on my new countertops in my shop office. One was put on with Liquid nails, the other was with Elmers carpenter glue. But the counters are for doing plan take-offs and at the rate plans are coming my way right now, this test will take a looong time.>>>

I like liquid nail.>>>

That "Gorrilla Glue" is the chit mate.>>>