Does everything it's supposed to do. It's built very well, I'm completely assured that it's not going to break. It's quite big but not as huge as some people have made it out to be. Plus the jacks on the top instead of the sides will make it easier to fit on a pedalboard. The big knobs are quite handy to adjust with the tip of a shoe when playing standing up.
The ranges of the speed and depth knobs cover a lot of ground, but if you want something extremely choppy, this one is probably not for you. But you wouldn't be looking at analogue tremolos anyway in that case.
The LFO control does have a noticeable, though subtle effect. I prefer it all the way to the left, but middle and right will probably have some use cases too. On the left the effect is softer, turning it up makes the effect choppier.
Unless you're going for a very very specific special type of tremolo, I'd buy this one. It's not just great for the money, it's great.