well i agree, that opinion is very popular and clear about roos, i have heard about the flaws with them myself..but being a jet newbie i was very impressed with how well/easy/straight my[ harpoon ]flys... maybe like i,ve heard many times, rookies fly better than roos...i,m greasin my landings with less than 1 hour stick time..rolls like an arrow..tracks like a train... or like gary said,maybe the difference is just how you set-up your roos.. ..i saw the nose gear was too long on my harpoon, and would help bounce landings ,before i ever flew it or heard that was a common problem.. so i cut it off 1/2 inch, works great..as far as rolls,the roos offset thrust line is why it gets squirly i believe , and so i have heard and i could tell that before i ever saw one fly too..the thrust line /angle is adjustable during flight on the rookie/harpoons ...so i guess it boils down to whether you want to only be able to fly around like a pattern plane [ which would bore my 50 year old butt to death] or whether you want to be able to fly like a pattern or 3-d ,as in the vids in my previous post..but as i said, i also want to get my military[ scaled out] 2nd jet going too, which has a tail,[ which i will hopefully fly similar to a pattern plane, if it will]..i probably would not have got a jet yet if i had not seen a hotspot doing some thrust /vectored tumbling and hovering a couple of years ago...maybe the roos do have some flaws but i don,t think rookie/harpoons have those same problems ..but like everyone elses, these are just my own opinions..wonder if folks will think my military bird is a true airplane?