Gary,
Every Roo I have flown has been like that, as well as the people I know who have flown Roo's, or most delta designs, it's not a flaw in the airframe or anything, just the nature of that type of airplane, and it's only in relation to other types of aircraft, I come from a pattern background, I'm used to airplanes that fly perfectly, they do exactly what you want when you want it to and give you no surprises. That is why I like the Exocet so much, it flies very true, no surprises, no funny little tendencies.
I never had any problems with my Roo or anyone else's, but having flown the Roo and the Exocet, I wouldn't hesitate for a second to recommend the Exocet or conventional style jet over a Roo any day of the week, I think it's 20X the airplane, of course, your mileage may vary