I'm pretty sensitive to the problem you are describing and pretty damn fussy in general but it generally works well. I do get a miss now and then. IMHO it is not a one handed remote. It takes two hands and you do need to look at it. You can't use the full "pad" of your finger, it's generally too big. Pushing with the tip of finger works and you don't have to use your finger nail.
The Scroll Button is kind of tight, but the idea is to set the things up so scrolling is minimized.
It might be worth recalibrating the unit (see setup menu, I used a Knitting Needle). If it's a demo model someone may of fiddled with it. Reset/Reboot does not forget anything. I'm not sure what a "factory reset" does regarding calibration. And I don't know if the dealer rebooted it of factory reset it.
It does take a little getting used too how much pressure is needed as well.
The hard buttons are also available for an array of functions that you can operate without looking at it and even use one hand.
If all else fails at least try one other unit before you write it off.
