In my experience, an independent lady is the only way to go, unless you are looking for a truly mechanical experience.  The very idea of "corporate" sex is a complete turn off for me.

n my experience, agencies can be ... Icky.  
Instead of a hot human experience, you get live bad porn: mechanical, perfunctory; and routine.  Agency experiences can feel empty or (much worse) forced.  My sense is that Agencies put a premium on a lot of things that don't benefit the woman or the experience.  I've turned to Agencies in the past out of ignorance (did not know how to find a Good Independent provider) &  out of disillusionment with bad experiences ( those really suck ...) with Bad Providers.  

I think agencies thrive because of ignorance and disillusionment. It can be hard for a guy to find a Good Independent and easy for a guy to become cynical after a bad experience.  Agencies may offer a client some assurance of the basics of decent service:  communicating, honoring appointment times,  expectations of price, honest representation of services/appearance, etc.  

Good Independent providers provide all these things and so much more as a matter of course.   Good Independent providers know that providing quality experience, having high professional standards,  generates a quality client base.  It is worth finding and supporting, professionals who take pride in their reputation, their skills, their clients and, most importantly, themselves.  

Best thing to do is avoid agencies.  More importantly, avoid bad providers - if you sense or see evidence that the provider does not hold to high standards - avoid contact.  If too late to avoid contact, avoid the session (give a very small donation for time and walk away).   Most importantly, find and have great experiences with good providers