twinspires sportsbook, worth signing up?

Been hearing about them a bit but never actually tried the site myself. Lately my go-to sportsbook cut down on reload promos, so I started looking around for alternatives. I’m mostly into live betting and smaller market stuff, not just big leagues. Anyone know if they have limits that get in the way or odds that are sharp enough to matter? Also curious if their promos are just for the first deposit or if they actually toss something to regulars now and then.

Not big on wasting time if their interface is a mess or if payouts get dragged out forever. Is it worth going through signup for someone who doesn’t bet every single day?