The GSX-R is the more accommodating motorcycle—ergonomics-wise. With a neutral seating position and relatively plush seat, it offers some reprieve to wrists and bottom ends, especially when compared to the R1 (which puts more weight on your wrists) and RSV4 (which has a more firm, sharp-edged seat). The problem? Suzuki has ditched the balancer shaft on this latest engine, and as a result, the bike has a propensity to vibrate your extremities at anything higher than 6,000 rpm. This was more noticeable on the track, where you sustain higher revs for longer, but still a frustrating point on the street—a blemish in an otherwise very street-friendly package.