A good regular is ideal, for many reasons.
If shes good theres no risk, and if she does all the things you want then its the perfect arrangement, by all means if you want another punt with another WG then its fine, but a good regular solves a lot of my needs, and speaking from experience they get to know the sex, you get extras, longer time, unrushed and flexible, you get an all round better service and the punt is better as you have less nerves.
But make her not too regular, and do have someone different every now n then
Agree with everything said here. I've been lucky enough to find a great regular in my area, I think she was my third or fourth punt. Since finding her I've visited a number of other WGs but have never left thinking that was great; good yeah, but not great. I was bowled over during my first visit with my regular as her GFE was so much more attentive than anyone I had been with before. I waited a month or so before seeing her again and was a bit dubious as I didn't know at that point if it would be any better second time round. It was and has continued to improve every time I see her. It will be my 11th visit to her on Friday.
Her preferred MO is to see a few regulars and only see a few new clients each month (she has a day job). She seems to have perfected the art of ramping things up each time we meet and certainly knows what I want from the meeting. She also has a varied list of services on offer and I haven't sampled them all yet. As I said, 10 down and still having a lot of fun.
I daresay at some point the magic will fade and she will run out of ideas to spice things up each time. At which point I expect she will become a good plan B. I am also not very adventurous and not tempted to visit saunas or the plethora of Romanians kicking about. I like the local independent and good ones are hard to find. I hate leaving a punt and coming away feeling I could have spent my money better elsewhere. When that happens, I'm straight onto the phone to text my regular, who is always very obliging and has on occasions reorganised her diary to accommodate me. All that within a 10 minute drive, can't beat it.