Best Blade for Heavy Beard

[Phelix]

I have a few questions for the heavy beard guys and the blades they prefer to use. I'm quite new to wet shaving but have pretty much got past the learning curve on my entry level 5/8th full hollow. I get 3 passes pretty efficiently and end up with what I would interpret as a BBS, but after 24 hours my face is very rough.
I'm ready to take the training wheels off and step up to a heavier/larger blade. I would appreciate feedback on how a 6/8+ heavy wedge would compare to a 13/16 or larger full hollow.
Also, I do realize that a wedge is a completely different animal shaving wise so I accept that there will be an additional learning curve there. In terms of blade maintenance, are there any differences in how you would refresh a wedge on a 12k as compared to a hollow grind?