I use RB's 95% of the time as I only do outcalls and contacting masses of escorts to ask if they cover my area to either get ignored or replies of "no" gets tiresome fast.
Tend to put them up 2 - 3 weeks ahead due to the amount of dross that normally bids (that TS from Leeds has bid on my last 3), also I only do longer punts.
Have got some really good rates from them, and also from girls who don't list outcalls or are way beyond the area I search. Infact put one up on Sunday, the first bid came in within an hour, was good, and from a girl reviewed on here. She's based in Manchester, i'm based in Dorset, which is going to be a long journey for her but apparently not a problem for her.
Generally find RB's work really well for me so continue to use them.