Not one playing live (yet), I'm not qualified from experience about using a laptop...however...it is refreshing for me to continue working out songs by using styles and registrations only. I find myself very busy pushing buttons and looking as if I am a musician/singer. I'm practing audience participation by memorization and keeping my eyes off the keys as much as possible. Next, I'll incorporate some SMF's and sequences that I have harmony to, but hopefully limited.
Having fun with the PA50.
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Live: Korg PA4X/Zed 6FX/EV Everse 8s/Senn 935/K&M stand

Studio: Korg PA4X/Yamaha DGX670/Yamaha PSR SX900/Boss BR900CD/Tascam DP24SD/MTM Iloud/Senn 935/K&M stand/Shure SM57/Sony C80 (2)/Blue Encore 300