2 or 3 days!?!
Damn, I never thought I was a hairy dude, but on Monday after not shaving over the weekend I've got over 1/4" of thick stubble. (which was hell before I was turned on to safety razors)
I second Technoviking, a classic safety razor is the way to go, I have to take 4 passes(1 with grain, 1 side/hook, 2 against (1 full 1 just around my mouth) and it rarely irritates me, the Mach IIIs used to be ok, but they've changed something in them (or my face has changed...) and they suck now. Never was able to get a good shave out of a fusion.
Razorock is a great resource, they also own italianbarber.com. I've been keeping an eye out, apparently their shop designed slant safety is really good, and based on how it's always sold out before I get online to buy one when they get a new shipment in, It must be.
I've been working my way through a couple hundred blades that come in their sample packs... since December, I'm about 15% the way though them, cost me less than 100 bucks with cream and an alum block.
So far my favorite blades are the Rapira Voskhod, and the Gillette Silver Blue blades. Anything by Rapira is decent so far too. No so impressed by the Lord brands (Dull) or the Feather's from Japan (smooth shave but so sharp you can't help cutting yourself, zero pressure, not even the weight of the razor and still get +3 cuts)
There are lots of good videos on italianbarber's website if you need pointers etc. video reviews too