I have ridden all ends of the Pearl Izumi liner shorts for last decade, this was the first cargo variant I have purchased. I have worn size L PI Bibs and Liner Shorts for 20 years so I did not even try them before cutting off the tags... Big mistake as these are small -- not too small but close. I suspect these are from a new supplier and run smaller. Try before you commit is my advice from experience.
These have the better pad, good for longer rides and the cargo pocket is nice I guess.