Need recomendations for 54 watt T5 HO bulb

I'm looking at updating the lighting over my 45 gallon and I've decided to go the High Output T5 route. Traditional CF bulbs leave a few gaps for light coverage due to their 22" length in my 48.5" wide canopy, and since I need to replace a few bulbs anyway, I figure I"ll go for a linear 48" bulb.

I was considering the 54 watt 5000k HO-T5 from Phillips, or the 6500k 54 watt HO-T5 from GE, but with the CRI being only 85 on both bulbs, they aren't really leaping out as being a "must have"

Can you guys toss me any recomendations, or personal experience with any alternatives? I haven't done too much research into what people are using for HO T5's these days and their seem to be limited selections out there...