I got rid of Mach 3 years ago, they're honestly not amazing razors, and way too expensive. I found that I was reluctant to throw them out once they got blunt because they cost so much, and even after one use they'd clog up with hair no matter how much I rinsed them.

Have you tried using a double edge razor (aka safety razor)? They're really cheap and give you an amazing shave with the right blades. Plus the blades cost a cent each if you buy them in bulk, so you could use a new one every shave if you wanted.