Most of the complaints you will hear about the PR system 1 are as follows:
-They don't like the beep it does when you turn it on or off
-They wish the screen had a backlight so you could see it better in dim lighting or in the dark.
-Lack of software (although its out there, and you can at least get it now if you try hard enough)
Thats about it for the common complaints.
For me, those things are not outweighed by how much I love the rest of the features.
Also, it seems like a lot of the people that complain about it, are people that havnt really tried it yet..