Ok, so I'm building up my AM/FR bike and I got to the point where I need to find a seat.. What is the most durable seat that's under $50? As in, won't rip itself to pieces when it gets thrown into the ground (roots/dirt/few rocks). Since I'll be new into doing this kind of riding, I'm planning on bailing and crashing a lot. so i want a seat that won't be dead after my first ride. And if the above seat doesn't exist...what's the best way to make any seat rip-proof?