
I'm on my 2nd M50-61. I bought one new when they came out, but decided to sell it for an M3. Fast-forward to 2011...I'm playing keys in a 70s/80s rock band and have to cover a pretty wide sonic range. My current gig rig is a Fantom G6 and a Kronos 61, but I've recently acquired a used M50-61 to serve as a backup for the Kronos and to have something lighter to haul to practices. The G6 handles all of the custom sounds I've created via multisampling plus sound effects, some synth stuff, etc. The Kronos is used for organ, EP, mellotrons, synths...mainly stuff that the non-HD1 engines provide.
I've spent this past week programming the M50 as the Kronos' backup and I am really impressed with what it can do. While it doesn't sound as luscious as the Kronos, it can definitely hold its own! For the weight, the price and the ease of use, I don't see how you can beat this keyboard!