How is the boot up time? I have a Pioneer Avic F710bt in my winter beater and it has all the same functions, touchscreen, etc but my one pet peeve is that WinCE systems take forever to boot up (especially if you have an active bluetooth phone pairing everytime). Radio/CD will play within a few seconds, but if you want USB/SD/Ipod music it takes a good solid minute after starting the car.
Also, I've found that if you're out running errands and making multiple stops, sometimes starting/restarting the WinCE units can make them hang up or not come on at all. My unit is a couple years old though, wondering if they've made improvements in this department.