There are studies out there that support BFR training. The pump is nice but if you're looking for the real benefits from BFR training you probably won't find it from these.

Price is right and they hold up well in crossfit classes. Good for those who have a bit less cushion in the rear.

Solid kettlebells. I've personally put some of these through some abuse and they hold up well.

I've used this bar once but it wasn't great. The curve seemed a little off centered and the sleeves were slanted down. The price isn't bad but I've heard better things about the longhorn bar which is also a decent price.

Crumb bumpers are the lowest tier of bumper plates. The 45s and 35s do alright by the 10s and sometimes 25s don't hold up as well to abuse.