Sky Scooter Pro II
You can safley fly it in a baseball field. I fly mine in the backyard--with trees all over- but we cut some down to make a flying area.about a 2 acre long area. once i get above the trees its better.
Can it do a loop , yes. They say you have to do a dive, no you dont. just make sure you have altitude.
Can it do a roll , yes. this you do need a slight dive for speed. make sure to use lots of elevator while inverted, and use lots of altitude. I do rolls at the field, not at home, rather stay out of the trees.
In all---go for the sky scooter--The geared motor and folding prop are a good improvement on it.