Yeah, I don't think I'd be buying the linked fixture, not enough information regarding output or spectrum for my tastes.
Not sure what tank you're looking to set up, but I'm a big fan of the finnex fixtures, I'm currently using a couple of 30" Ray2 Daylights, 1 on a 37g tank, and 1 on a 20L tank (With CO2 injection) I couldn't be happier.
I've used 'off brand' lighting over a reef tank without issues with the fixtures, but they were ones designed to be hung rather than attached to the tank (
This link as an example) And haven't had issues with the level of output or the build quality... YMMV.