A guy I've contracted for the last year in a (then) brand-new PC-12NG didn't like the groundspeed shown on his iPad on a recent westbound from KY-CA. He's now swapping it for a new EMB-505 (Phenom 300).

I'll miss the NG because I LOVE the Honeywell Primus APEX over all other FMS in which I'm experienced, but overall am accepting of this transition.