Not sure if I could live without a touch screen. If an alternative to do the same thing with button pushing is available, it's the best of 2 worlds. The 800 touch is magical and a dream for live play. I hate trying to "line up" things.
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Yamaha 920 / Yamaha DGX-670 / Maui 5 Go (2) / Senn e935 / Sony C80 / Tascam DP24sd / ATEM Mini Pro switcher (studio)