I've never heard of Roland having unreliable keybeds. They've always been known for having good action. Now some of their cheaper models of course will have a lower quality keybed, but nothing so cheap that reliability is an issue.
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.