Whats the best brand UV?

[Glostik]

Im goin to buy a UV sterilizer, but i need to know which brnad is the best?

I have looked heavily at Coralife and Aqua.

Its goin to go on my 150gallon FW , how many watts should i get?

 

[mrV]

15 watts (for 150 us gallons), check what manufacturer say...

I don't know which is the best, because they all work in same way - or a least they should Read this. I have De Bary UV-C sterilizer.