I went from a 790 c.c. Triumph Bonneville twin to an I-4 Suzuki GSX650F and I ride the latter just like I did the twin i.e. I don’t often take it much above 7000 RPM. The way it’s tuned, it has plenty of power in the lower rev range and can be thrashed up to its 12,500 RPM red line if that’s your thing. The beauty of this bike however is that there is no desperate arm-pulling surge anywhere in the entire power band. It’s completely linear.
Very sure footed and comfortable motorcycle with a near upright riding position. You’ll also very much appreciate the fairing and windshield on the freeway; I know I did (coming from naked bikes).
130+ mph capability, 0-60 in 3.8 seconds (a touch slower than your SV650), 48-50 mpg on regular gas, smooth, comfortable, full featured. If it’s transport, with some limited sporting and touring ability you’re after, you couldn’t do much better than the GSX650F IMO. Check out the reviews, there aren’t any bad ones that I’ve found.