I had gel powder infill on my nails at the Little Nail Room and I was very satisfied. The only thing is that I had to pay extra because the extension had come off on two nails (which cost me a fiver!) but, other than that, I was very happy with the treatment and the therapist.
The little Nail Room is a really cutesy decorated place, I couldn't fault my gel manicure which was done with the upmost care and attention. It did lack in atmosphere with just the TV for company, but she lady did give me the option of putting some music on.