Is the length of a waiting list a good indication of the quality of a clinic?

[Scottishlad]

There are two hair transplant clinics I am considering.

One clinic has offered me a hair transplant in a month's time. The consultation was with a consultant, was free and took place within a couple of days of contacting them. The caveat to this is that it is a clinic that has only been open a few months. They say that they carefully select the best surgeons from all over the UK to perform the surgery. They say that the surgeons are experienced.

The other one has said that they have a waiting list of 6 weeks for a consultation and of 3 months for hair transplant. All procedures are performed by the same surgeon who is a well established plastic surgeon. The consultation is with the surgeon (who is a doctor) doctor and has a fee.

Any advice would be great please.