I've used both T-5 and PC
lights on my tanks and I'll have to cast my vote for T-5s.
Temperature-wise: After switching from PC
lighting to T-5 lighting on my 75 gallon reef my temperature dropped 2 degrees.
Light output: You just get more lumens per watt as opposed to PC
. I'm not entirely sure of exact numbers, which is probably what you're looking for lol. T-5s also penetrate deeper in the tank so you can keep whatever coral you want anywhere in the tank depending on the light fixture.
Let's put it this way. PC
lighting was designed with the intention of lighting desks, cubicles, etc. T-5 lights were originally designed for tanning beds.
T-5 lights have a lifespan of ideally 9-12 months. PCs ideally 6-8. (This is based off reading I've done on AA)
I'd recommend Tek, Current Nova Extreme Pro, and Current Sundial.
As for bulbs, I really like Giesemann:
Giesemann High Output T5 HO Fluorescent Aquarium Lamps
You can keep what you want with PCs, but you and your coral will be happier with T-5, and so will your wallet in the long run.