Well, suffice it to say, klink and I will have to disagree. I do not think you will find too many other people raving about the quality of Aquatraders light fixtures. I am not saying the Current are up there with ATI's or even TEK's, but they are definitely a step above the Coralife's and Aquatraders, and even the FNI.
I am not sure what is impressive about the ballasts from Aquatraders, other than on the company's website the one review for the 20" T5 fixture mentioned above states that the reviewer needed to replace the fixture due to a ballast problem...
Look, for budget-concious aquarists, inexpensive brands can be very useful, and I myself have used various items effectively that were on the less-expensive side. However, to be fair, you usually get what you pay for. Can either work - sure...but I would not just take my word for it - go and read up on reviews outside of this forum and I am sure that you will find fewer issues with certain brands.
As I said previously, good luck with your choice, and be sure to post up a few pictures after you have it set up.