I admit I'm kinda new to the suppressor game, but here's my $0.02.
.22LR is pretty dirty. Rather filthy, actually. So I'd rather have a can I can pull apart and de-gunk. I've heard that there's ways to clean sealed cans (my 5.56 is sealed), but I figured for the rimfire stuff, I'd rather have something I can brush out. I went with the YHM Mite- not the quietest one, but reasonably priced and it allows disassembly.
On these things, given the NFA hassle and expense of the tax stamp, I am of the mind that if you can swing the extra, you're better off buying the nicer can.