I have no experience with Microtech. But I do have a Benchmade 520 Presidio in my front pocket right now. It's been a good knife so far. Its easy to open with the thumb stud, and the axis lock is one of the best.
If you do go with the Benchmade go to Ebay you can get it for far cheaper than 170.00. I got mine for 136.00 shipped and I've seen them lower than that since then.
Last edited by Glock2008; 01-23-2010 at 20:54..