Myself and
@Mañ'O'Green both use T5 UV lights. I have the agromax pure UV and I forget which ones exactly ManO has. I got mine from htgsupply as it was nicely priced for the housing and bulb. They have a couple to pick from in 2' and 4' lengths.
Solacure also make some nice UV options. If I upgrade my new 4x4 with UV I will probably run the Solacure tubes.
I have not seen great LED options yet. Most are the fluorescent tube style bulbs but they affordably put out UV A&B.
Interesting articles: Do read skeptically as they are from the manufacturer