Have given up on the RLD these days, apart from browsing. I have tried some of the privehuis:
Asmara - I haven't been for a couple of years, but it was OK, last time the girl wasn't great, and there wasn't much choice. Wouldn't put me off trying there again. No need to take a taxi, it's pretty close to a tram stop - No. 13 if I remember correctly.
Park 118 http://privehuis118amsterdam.nl/
usually has plenty of choice, and close to the 4 or 25 trams. Made a bad choice last time with a new girl - should have gone with experience
There's another one that I used recently which was good, but only OW. Can't remember the details now, but if I can find them I'll post again.
Salon Prive - haven't tried that one, onto my list for next time - thanks for the suggestion!