Pretty similar to the IL4 in most respects (figures) but would give more grip and smaller front profile so in theory less drag so faster compared to il4. Guess there is the Aprilia V4 coming out so wait for that and see
Sound better than an IL4.
IMO this is the sound stakes:-
V-2
V4
Single
IL6
IL2
IL3
IL4
Out of all the reasonably common.