The h3 and the newer burn are similair to the Deisel in the fact that all of these boats have edges. This isn't a bad thing, as I prefer a kayak with a little bit of edge, because they carve in and out of eddies better (an M3 although rounded, is more edgy than say a Jefe) and they hold a line better (ie track).
Edges work great when the water is generally pretty deep, in places like Bailey, Gore, Blackrock, and Durango Creeks where the channels are deep. Edges are less than desirable in very rocky runs like SSV, NSV, Silverplume to Georgetown, WF Clear Creek, etc.
If you plan to run more of the first list, or big water in general, than the H3, Burn, and Diesel are all good boats. If you think that at some point you will be grinding over wet rocks because SSV is so fun, then a more rounded boat like the M3, Jefe, or Habitat will better fit your needs.