From what I've read, the Reptisun 10 is best, we are talking about the long tubes, not the coil/compact (never use the compact/coils) then the Reptisun 5, then the reptiglo 8. What is best is the mercury Vapor bulbs, the Mega Ray, the T-Rex. There are one or two other MVB's but these two are the best. I use the reptisun 10 until I can get the Mega Ray. About the Fluorescent tubes, the Reptisun 10 is the best. Be aware: I found one labeled the Rept A sun, I have no idea what that is or whether it's even any good. I just saw it at a pet store a couple of weeks ago. Anyway the reptisun 5 is good but, as I said the reptisun 10 is better.
You can only use the mega ray if your tank is at least a 40 breeder or larger.