Personally, I like them. My LFS turned me on to them for my tropheus tanks. I use them in conjunction with the PCs that I already have on the tank. The PCs have 4x55 - 9325 and the GLO are 2x54 Powerlight. Really brings out the color of the fish. Since I like them so much, I also plan to get them for my 3ft-90 gal plant tanks, and use them with Geissman bulbs.
BTW, check your local fish store for possibly better pricing.
BTW, check your local fish store for possibly better pricing.