Recently purchased some Powerblock Pros with knurled grips. I had pondered getting a set of the Pro 50 Exp, but while I waited Powerblock changed the set to 40s, with knurled grips. I wanted the grips, but now had to add an expansion set to get the 50 and 60 pounds. So far it seems like a quality set. No major issues. Minor issues: it's a little cumbersome to change weights in 5 lb increments. You have to take the set down to the handles, flip a tab, remove the cylinders, then restack the handles and select your new weight. Also, only one real comfortable way to grip the dumbells so it limits some exercises you might normally do with dumbells. From the looks of it they should last quite awhile.