Why a touchscreen? Can't you just use the mouse?
Besides, I have a 27" (non touch) screen and am obsessed with fingerprints already.
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.