I wanted to share my own experience/mini-review with both BB and NF. In general, my experience doesn't differ from many people who posted here but something happened today worth mentioning.
I was with NF for a number of years and was subjected to throttling big-time. At one point last year, I had a friend of mine mirror my queue just to make a direct comparison. In all cases, he received new releases earlier than I did, in some cases there was a 3-month difference!
A few months ago, I called NF and the person on the phone was so evasive and condescending that I switched over to BB. Another major deciding factor was that there is a BB store literally outside my apartment.
So far, the difference has been amazing in terms of total # of movies per month. I'm sure the BB store's proximity has a lot to with that though, since I can pop by anytime and I generally avoid rush hour. I made the mistake of going once on Friday evening, never again!
The things that i hated about BB stores are still there: snooty young employees checking out what you rent, attempting to sell you pop corn and candy at 8 am (!), the occassional obnoxious customer in the line in front of you. On second thought, i just may be anti-social.
Also, the online selection was a little bit better with NF, especially in terms of older and/or foreign movies. But, in terms of selection, Greencine was a better experience than both BB and NF.
So, back to what happened today. For a few days my BB queue was stuck. I returned movies at the store Thursday afternoon and until today nothing. So my first instinct was that BB started the same practises as NF. So, i call them up ready for a fight and the woman said there was a glitch with their system and the movies showed "returned" online but not at the distribution center. So, if you ever get the same issue, call them sooner rather than later.
5 minutes after i hung up the phone the problem was fixed and there were 3 coupons in my e-mail box as a "sorry". So, unless things change drastically, it looks that i'm staying with BB; more movies, better customer service, even if the selection is somewhat more limited and the NF website was much better.