I have the SV650N (Nekkid ’05 version with fuel injection) which has a riser bar, so makes it comfier. Comfort kits are available to raise the bar on the S model. I don’t find it too vibey, but then I like that feedback, as it makes me feel more involved :-) Exhaust can will need changing too. :-)
It is a budget bike. I made the following changes and now it works really well.
Fitted an aftermarket rear shock. The original is underdamped for those over about 11-12st, so wallows in the corners, unless you wind up the preload until it isn’t really working.
Fork is a bit lightly sprung too, so dives when under heavy braking, but I mainly use the V twin’s engine braking so it doesn’t bother me much. Although, I have cheap (£40ish)emulators waiting to go into the fork.
I adjusted the TPS sensor, it may need adjusting to make the bike behave well at low speed/revs (only a 15min job).
Fitted decent tyres.
Its good for commuting because its narrow, light and the Vtwin’s low/mid range torque delivery makes it nippy and easy to control… and its good fun in the twisties. :-)
Post 07 versions are more economical, as they had to comply with raised emissions regs… twin spark, o2 sensor and better fuel mapping added.
The forum at SV650.org is great too.