I am a life long serious cyclist with many many miles in my past.
I am very happy with all aspects of the RAD mini.
It's very solid and feels big. Not at all like the ~30 pound "light weight 20" folder I also have.
The knobby tires are a little squirrely at speed in the corners on pavement maybe worsened a little by slightly darty steering caused by the compact frame's geometry. I may try a pair of the road tires if I ride more on pavement.
I recommend RAD to anyone that asks. They are a very good customer oriented business in my experience. Very good value IMO.