I had a hard time finding a replacement for my Multiplex Cularis, and thanks to suggestion from many (thanks) I settled for the Diamond 2500 which was out of stock, but replaced by the BFG2600 available from Hobbyking:
http://marc.merlins.org/perso/rc/post_2015-08-15_BFG2600-FPV-build-with-Pixhawk-Ardupilot-3_3-Diamond-2500-remake-from-Hobbyking.html