I've seen a few of the XYZ 20's flown at the MRRCS field, Ernie. Can't tell them from the DLE until you look at the engine itself. Tom D. is quite pleased with it so far and has nothing but praise for it. Now that it's on sale, I'm very tempted. So far, I've gotten 3 DLE 30's, 2 DLE 20's, a DLE 35RA and a DLE 55 from Tom and I am very pleased with the results. The 55 was my first gas engine and it is now three years old and still runs perfectly in my TF GS P-47.