I've had the same unit except with the 175W MH for 3 week now and so far so good.
I did have some issues with the workmanship. I had to take the top cover off the ballast to tighten up some wires. Once inside I found several loose screws. Before putting the top back on I used some weather stripping on the edges, to reduce the vibration (top was rubbing on bottom portion of the case). An other issue I had was once the MHââ"šÂ¬Ã¢"žÂ¢s were turned on the cooling fans were rather loud. After further investigation (had to take the end of the unit apart) I found the fans where loose, so I had tightened them up as well. Once inside I added some weather stripping on the edges before putting it back together (more of a precaution).
I figure I spend about an hour making adjustments on the unit. Overall for the price I have been satisfied with the unit considering similar units cost $700-$900. Only time will tell how long the unit will last.
As for Aquatraders, I was very happy with their customer service. Iââ"šÂ¬Ã¢"žÂ¢m in the military and had the unit sent to an APO. The used true shipping rates and I had the unit in a week.
Hope this Helps, Coop