Well LEDs > T5 no question. I'm using T5 for my clones right now, but it wont last. T5 simply don't give out enough light. I suggest getting some LED panels or induction lightning if you don't want to waste electricity and deal with ballasts. I am.

The GlowPanel 45 LED Grow Light - led grow lights -Sunshine Systems
Procyon-100 100W LED Grow Light - HomeGrownLights.com
LED Lighting

Few LED shops.