I've always had a problem getting CJ to respond to me too!
In terms of 'experience' with dating sites, I've trialled most of the main ones, and can recommend datingagency.com, datetheuk.com and friendfinder.com as the best three platforms I've tested.
I guess I should add I
am engaged to be married, met her through random text messaging (long story, maybe for a g2g night!) and have only tested the dating sites for professional reasons only (just in case Emma is reading this - sorry dear!)