I used a couple T12 shoplight fixtures and daylight bulbs last year. It worked great and was cheap to purchase and to run. I used a $5 timer that is pretty cheaply made too but it worked fine and didn't break. I will add two to four more fixtures this year.
The guys in the store kept trying to get me to buy led or grow light kits and those were both well over a hundred each. (The one kit was over $300! Just for one light!) I couldn't afford that. And I'd read so many stories online of people just using shoplights I wasn't willing to spend $300 to make a salesman happy.
In my humble opinion you really don't need anything more fancy than cheap shoplights and daylight bulbs.
