From me
Anyway, T12's are obsolete in this hobby. Don't waste your money.
Regarding the PC vs HO T5 debate, here's more ammo in favor of T5's (aside from the fact that they outperform PC's in every conceivable aspect): Bulb selection.
PC bulb selection is terrible. The colors are Mickey Mouse, the pricing is insane, and that's if you aren't already dealing with the whole straight vs. square pin fiasco. HO T5's have fantastic bulbs. True actinics of a million flavors, red spectrum, pink bulbs, whatever. You can't beat HO T5's for selection and quality.