MRR needs more x15 rigs listed! People are renting out like hotcakes! make more then what you could mine! then buy Maia with what you get (you will gain more this way ). It also doubles as by far the best site for monitoring your rig stats and setting up failovers easily (failover support for cudaminer!!). New features added all the time and amazing support! See for yourself:

http://bit.ly/1jZnhJK
(appreciate if you register with my ref link below, if not me then use someones !)
http://bit.ly/1q7SZKZ