I have been going to this place consistently for a few years now. Their prices are reasonable, and I believe they offer the best value for your money in CLT.
They are super busy on Sundays (since they are only open a half day) and they are busy everyday after 4:30 (after work rush) - so I'd suggest avoiding these times if you want to walk in without an appointment. The best time to come is Tuesday or Wednesday before 4:30 pm.
They have tons of color options for standard polish, gel, and dip. They also give you a lengthy massage with each service. I've awarded 4 stars, because I feel they could be a bit more professional (some of the nail technicians were doing their makeup, eating, etc. on my recent visit here) and some of their tools are older and look aged.