@emenel might be a good candidate to weigh in on BAM here. If you’re looking for heavily modulated reverbs or shimmer, I’d strongly suggest an Eventide Space which is the King of modulated (and glossy realistic) reverbs. If you’re looking for a flexible, beautiful vintage sounding reverb which can add some gentle warmth-all-the-way-to-crunch, which can put the shine and glue on your sounds, and which can still get HUGE and VAST then the BAM is pretty much your toy.
I’m an Eventide 'verb guy (although I’d love to have some vintage Lexicon units too) - I love deeply modulated reverbs and shimmers and stuff. Nothing else even comes close (not even Strymon’s stuff, as hard as they try), to me. But BAM has this beautiful analogueish sort of sound that’s just got something special to it, too. Both have their place, both are fantastic, but they’re each unique, too.
And then there’s pretty much everything else, like Empress, EHX, Meris, Strymon, etc. They’re fine. But I don’t hear anything special in them, personally. Which might be precisely what some people want - a good, clean, controllable reverb with one or two sounds they love and a couple other options. Space and BAM are deep. You’ll get huge range from them. But they don’t really overlap.