Hello, I will add manicure services for my salon and will buy OPI products only. Im very concern that the OPI Lamp has the worst reviews 1.9 starts. I have read on the forum that you should use the same brand lamp, but the reviews scare me. Can some one who uses OPI please advise me. I need to buy 6 lamps and I dont want to waste my money on a bad product. Please help!