I just wanted to write an updated review because they are SO GREAT! My gel nails lasted for an entire month and there were no chips and no problems! Also everyone was complimenting my nails and, having compared it with others, I feel Signature does a great job!
I also feel that all of the girls working there are very kind and experienced (they try to be as perfect as possible!), so you don't need to be afraid of walking in or having "any" one of them do your nails. I myself was a little pickier this time (if something was not to the way I liked it, I would tell the manicurist) and at no point did she make me feel like I was being annoying--she listened to my concerns and she fixed it. The customer beside me was also quite picky, but her manicurist also patiently listened to the customer's needs.
Everything was, once again, very clean, and I left happily! I highly recommend to anyone who wants some fancy, pretty nails!