I'm looking for a "serious" folder with a large 3.5-4.0 inch blade. Trying to stay in a street price range of about 90.00 - 150.00. I'm guessing on the price, but it is about what I think I can get for what I am selling. Looking for probably a liner lock, thumb stud or other very fast opening, plain edge, non coated. For example: A couple which come to mind are: BM 710 New or used ZT (non-coated)?? Used All recommendations appreciated. Hoping to find something easy to find to buy or trade for without having to look for too many weeks.