what shorts preferably within $40 are best for grappling as far as comfort & durability goes please list the website where they can be found
This has been done many times. Use the search function next time. Sprawl.tv Clinchgear.com (currently out of stock on just about every size, but working on a new design). Also, check out the sticky for more companies.
I can help you with nogi, tapout, xfgear (shorts should be avail next week, taking pre-orders) and HCK shorts. www.SSFgear.com
Top 2 are definitely Sprawl and Nogi. I haven't personally used Nogi but have heard nothing but great reviews. Sprawls I use all the time and their new models are awesome. Sprawl also has the best service in the business.