I've got a pair of the lights, the 22" and the 34" (those aren't the exact measurements, but close enough) on a 50gal. They are great for the softies and LPS. I've got the SPS at the tippy top of the rockwork and the birdsnests are growing up a storm, the montis seem to be doing well, but the acro frags, while growing, are definitely not getting enough light, lacking full polyp extension and losing color / turning to brown. I'm keeping my eye out for some additional lighting.
As far as the pumps, I've got the 660 as one of my powerheads; it produces a nice gentle current but really is underpowered for this size tank. I'll be switching it to another smaller tank, along with the lights at some point as I upgrade the lights and pumps for this tank.