If you've got a laptop, I'd take midi controller + DAW for performing any day, it's more versatile IMO than just a keyboard with stock sounds, you can play along with songs, use customized sounds (and use komplete 5). Of course, that's provided you learn how to work your DAW.
And like we've said, don't worry about the after-touch, because as far as I can tell, if you've never had it, there's no way you'll miss it.