TiGuy,

I have an MVVS .21 that just ROCKS!!! it has the "combat" head and the "mini tuned" pipe. It is the fastest engine at our field! Faster than the O.S. .25 FX. I can get two 4 minute rounds in on one 4 ounce tank with fuel to spare. I have not run the .26 too much, but I have found that it is easy on the fuel, too. I am using Red Max 0%, (yes, 0%) and it cooks along pretty good. It is not as strong as the .21 but it is fairly new and still real tight. I've probably run about 1/3 of a gallon of 0% through it so far and plan to try 15% to get every last bit out of it. I am VERY impressed w/ the MVVS engines! They have a very nice carb that comes completely apart for easy cleaning/repair. THe needle valves only cost $5.00 to replace vs. an O.S. at $$$$$$???? I would not hesitate to recommend the MVVS, but the O.S. .25 seems to be a real competitive engine as well. Good luck with your decision!

JEFF