I got the prz 4d shorts on Friday. I wore them yesterday on a ride up Pike's Peak. Maybe 4.5 hours in the saddle, rather grinding.
I sort of felt like they were slicker, like I was sliding on the saddle occasionally but that really could have been due to brand new unlaundered shorts or just the angle of the ride.
The shorts are great and the pad seems as good as on my $150 Pearl izumi. Curious about the durability but they seem as well built as any high dollar ones.
I'm skinny, usually size small. According to their size chart I was the top end of xs or the bottom end of small. I went with the XS and they fit perfectly.