Nothing wrong with the light...The only issue that some folks have is the strobe mode. Honestly, there should be a low-med-high instead of high-med-strobe. The memory mode isn't in the switch on, wait for a few seconds and switch off. It's different in the case that you'd have to wait 5 seconds after you've turned the light off to recognize the last mode. Aside from that, the strobe is the only thing I dislike from the light.
Nonetheless, it's an amazing thrower for the lowest price you can't beat. Did I forget? The new aspheric head is available at some sites where you can buy separately. Derelight DBS-T is double the price of this guy.