Shoestring
Mine has the OS61fx w/bisson pitts muffler. I takeoff with 1/4 throttle and fly it at 1/2 throttle. It moves!!! It is very light for the size. On high rate ailerons, it will roll so fast you cannot count the rolls. Loops are huge. I highly recommend it to good flyers...very stable but it could get away from you if you are not careful. I would estimate my speed as 75 mph at half throttle and over 100 mph at full tilt. Landing speed is brisk but manageable if you have enough runway. My engine is new and I don't have the idle as slow as it will go...and I have only flown it in zero wind or 90 degree crosswind conditions so it will slow down some more under a more favorable wind.
As far as quality goes...I don't think you will find a better built ARF. Monokote and paint on mine is perfect! The decals are thin so make sure you cover the red side stripe with some Cub Yellow where the number 16 goes or you will see the stripe through the decal. I count that as it's one flaw. Also, use a Goldberg spinner instead of the GP spinner that comes with it...the Goldberg spinner matches the paint on the cowl and the GP spinner doesn't. I guess that's two flaws.
If you want people to watch you fly, this is the ship...It's sooo cool taxiing out with it's fat fuse and stubby wings. And when it zips by at 100 mph there is no better sight.
You will love it. Believe it or not I am considering buying another one in case something happens to this one. This is the first plane I've thought of buying a spare for. Usually I just move on but I will miss this one when the inevitable happens.
Yak