Pretty Cool. I'll bet that he bought it during the Washington State International Kite Festival. That one looks like the pre-HQ Six panel version. Are the handles wood or bent carbon-fiber spars?
I'll be honest, while both are fun to fly, the Deca has a zen quality to it that the rev just doesn't have. Now I am just throwing out an opinion, but I would ditch buying a rev, and just start flying what you have. The initial setup is tricky, but after you have done it a few times and learn how to put it away and set it up, you can do it just as quickly as a rev. They pack up pretty small. You can lay on your back in the grass and fly them one-handed. They will float and move about on the breeze with a magical quality. It will remind you of your dad. The skills that you learn while flying it will translate over to the rev. You might want to try it out before getting a rev. Rev has been around for a while, and I doubt they are going anywhere. You can always pick one up later. Many Rev flyers have never flown anything but a rev, so that is all that they have opinions about.
I would love to pick up another Deca, but I really think that you should try flying it first. My dad hasn't passed on yet, but I won't ever sell that set of Trlbys that he got, oh, so long ago.