I've been a member of the 2 at a time plan for two months.
The price/mo is reasonable at $17/mo.
Here is my Review/scoring for BlueDoor:

8/10 on selection and variety.
8/10 on keeping new titles coming in.
5/10 on availability of those titles... in me que I have about 35 movies teed up (just like my NetFlix) and at any given time 3/4 of those are unavailable.
3/10 on turn-around-time... they throttle you down to a minimum 7-day cycle. In other words, even when I return a DVD the next (eg Monday morn!) the return won't register until Saturday and the next movie won't ship till Mon. If you "report a problem" you'll get an automated reply that your DVD has been out for less than 7-days (consequently, they won't consider it a "delay"?!)
9/10 on customer service via email. They respond consistently within the same day... But stand by their wait-7-days-first policy : /

If you don't want a membership, but want to rent just a few particular titles, this is the best site i've found, and i've tried them all. The selection is huge and they have a lot of new releases.