Excellent build quality and very nice illumination.
The lighting is very powerful, small and light. Nice! It's still expensive because be careful you have to add customs fees to the price and transport costs if you are abroad.
Given this was just a commuting set of light I am very pleased with these. I have a few simular sets for getting around town and these are a step up in almost every way. Love that the buttons are large enough to use mitts. They remember what mode I was in when shutting off so you don't have to cycle through. The little side light is a great idea for extra visibility. Little tricky to get on initially but most are. Stays in position once on and bonus with this design you can just buy an o-ring at any hardware store if you lose or break it. Might be a little too much of a spot light for actual trail riding but haven't tried yet and not really it's purpose. My favorite part for commuting is the light beaale doesn't pass the housing so in flash modes you don't feel like your having a seizure. I can actually run it in eco mode and usually do. I would highly recommend this set for a small commuting setup. Bought a second set I liked them so much.
The Plug Twinpack was just the thing for outfitting my twin sons' bikes for their rides to school. Bright, easy to install and activate. Easy to move to another bike, if necessary.
Bought the combo some time ago, the lights have a number of useful modes (including a dimmer battery saving mode), batteries are lasting very well and the brightness is great. Only thing to consider is if you are riding MTB through forest/bush at night the headlight is slightly too dim to be fully confident on the ride. For other less dark/risky applications it is more than enough though!