I still also ride a VFR 750 as well as my GS1200!
The things I notice when I climb back aboard the VFR:
1 The grips are far chunkier
2 The brakes are spongey
3 I'm pointing at the floor in the riding position, what must it be like on a Ducati 999?
4 It's not as torquey but far better than a CBR600
5 Having a Shoei XR1000 with a Pinlock visor, I'm always looking through the edge of the visor insert
6 It revs far higher!
7 It feels tiny! (The VFR that is!)
8 Better wind protection
9 I keep drier when it's raining
10 I can't drive as hard into bends as on the GS
11 I can't see over hedges i.e. round bends
12 It doesn't have expandable panniers, so only ride with a top box since panniers look ugly on a VFR
13 The Honda heated grips get hotter
14 It never needs oil top ups between services
15 I can put both feet firmly on the ground
16 I'm forever topping up the scottoiler and adjusting the chain
and finally
17 I never know which gear I'm in!