Never been in an 120. The B2 with a full bag , and a hot day, 120 is pushing it , espically if you have floats or a bubble window, Lucky to get 105 then. B3 , mayby a little faster, same thing with the floats. Just performs a lot better at alt.
the 407 is quicker......
How about looking at an A119, fast, powerfull, plays up high very well, lots of room in the back.
RB