For veg, T8 bulbs, runned with electronic ballast would be the best alternative. Choose triphosphor tubes (with CRI 80 or higher), they are the most efficients. Daylight work better in veg (over 5400K, better 6000 to 6500K).

T5s is a good alternative for flowering, due to its higher intensity, but its no neccesary in veg, so no sense pay a lot more for the T5s.