I expect there are many riding pants that will work. The questions should be, mesh or textile, what material i.e. nylon or Kelvar, armor and how much, how do you put them on and are they designed to be "over pants" or stand alone.
The mesh vs. textile is easy. Unless you only ride in temps between 70F and 85F when it is not raining then textile will be much better than mesh. High denier nylon works but if you can afford to buy Kelvar it is much better. Kelvar gives better protection, does not transfer heat or cold, and does not absorb H2O. Armor, you need it, hip, thigh and tail bone. How much, more is better. The last how easy are they to put on and off over boots, you just need to try 'em.
Aerostitch and Motorport make some of the best riding gear, either is a good investment.