i used to run a 130w PC over my 20g last year, it was crap
then upgraded to a 175w XM15k SE on magnetic ballast. then upgraded to 2x175w XM15k SE's over the 20g tank.
now we have a 15g, with a 175w XM20k SE on magnetic ballast. and a 30g with 250w Radium SE on HQI ballast.
and the plan after i move, is to do a 30g cube with mostly sps, and the 250w Radium SE on HQI ballast and lumenarc mini reflector. and a 29g tank w/ the 175w XM20k or XM15k SE on magnetic ballast. and will probably go with some T5 blue plus actinics.
I tried the VHO URI super actinics a while ago, and didnt like them. Made everything look pale w/ no contrast. Also tried that new Iwasaki 14k Aqua 2 bulb (175w SE). Absolutely terrible bulb for softies.