These are very nice, especially for the price. We have had a problem with a few of the LEDs going (some almost immediately we got them) but there are quite a few of them.
The programming is pretty good and they seem to be sensibly sensitive to sound without too much mucking about.
The lead is a bit short, however. When they are placed on the floor, this is not too much of a problem but whe they are on the LST-250 stand, one has to mount a multi way board right on top of the stand and that looks a bit naff. I would have though a 2m lead would be better. Yes, you would have 2 or 4 leads coming down the stand but it would be a bit more stable.
Otherwise, very nice, entry level lights.