Russmo - I've got an RD4/7/9 (the 9 is a recurve, the 4 is slightly recurved). I've done some chopping with the RD9 - its not as forgiving on the hands as the Dogfather is. Its very sharp and easy to sharpen, and clears brush quite well - I was pretty surprised. The RD7 has been a good knife. It is balanced well, the Grip is perfect for a midsized knife, I like Justin's Micarta a lot, and I've been able to do quite a few little mods of my own to it (blued it, added spacers to the micarta grips, and cordwrapped it today - I just redid it again actually) - its been a fun knife so far. Its also very, very sharp, and since my RD4 and RD9 have a recurved shape, the RD7 is the only one that I've been able to strop - and it takes on a phenomenal edge. The RD4 is a whole lot of knife in a 4" package. Its very heavy and stout, and slices quite well for a 1/4" thick knife. Since the blade is so wide, it has a relatively thin edge (as compared to the Dumpster Mutt) which is quite nice. Check out the Ranger forum over on KnifeForums - I've written my comments over there quite a bit as well. Edge retention on all of them is quite good. Scrapyard and Ranger / Dan and Justin are my 2 favorite knife companies/makers.