Got this as well. Only thing that gets me is that you expect the bottom grip to move when you press the lever, but it's the top one that does (doesn't take too long to gain new muscle memory). Otherwise it is great.
Has hidden talents: magnets can make croc clips stick to the uprights so they don't drag down whatever tiny wire they're gripping. The grips can be reversed so they are close to the base rather than sticking out (but you lose most of the flexibility). And apparently you can put power through them to simplify getting volts onto PCBs. Or something.
I find the base just the right size, and adjusting the angle and direction of the grips is so much simpler than any other helping-hand-style thing I've tried (and got a few, trying to find The One that works). Price held me off for a while but don't regret getting this, unlike some other kit that looked good but lives only on a shelf.