Forgot to mention... on Karsten's site, upper left corner, click on 'For Sale: View Available Items' to see his cheekpieces.
I prefer the model 'B', as I like being able to loosen two knobs and slip the cheekpiece down for cleaning without having to use any tools (like the other Karsten models or Shawn's DE cheekpiece). I also like to be able to tweak the cheekpiece height in the field, depending on the terrain, etc (i.e. steep angles sometimes demand a little different set up than flat terrain) if I have the time. Personal taste thing again - being 6'5" very few stocks fit me well to begin with, and shooting NRA HP long-range Prone got me spoilt about adjustable cheekpieces ;) If Kevin offered a thumbhwheel cheekpiece I'd probably go that route; as it is I like the saddle style better than the two thumbscrew style he uses now. Other people like Terry Cross's design (don't have a link, but if you search around you may be able to find it).
The 3200 also has 50 MOA of adjustment. I'm also using Burris Signature rings in dual dovetail bases. I set the inserts with the maximum amount of taper while allowing a 100 yard zero. Between the two I have about 70 MOA to play with. I need less than 25 to get to 1000 yards.
Most of my shooting is 600 yards or less. That's the limit at the range that I go to. I haven't had time to go somewhere else to stretch her out a bit.
Have you had any problems with the Burris inserts slipping on the 300? Do you think they would work well on a 338 Edge? If so, $40 and a selection of inserts available beats $100+ for canted bases and "tactical" rings.