my opinion.........
Since you are coming from a cruiser....
OPen class
I like my bike Honda Cbr 1100XX. Very comfy, especially with 2 people.
In addition to the Suz Eyebusa, See if you like the Kaw Ninja 12-r. I find the seating good, its a narrower bike than mine or the 'busa.
Naked bikes
If you don't want to spend $10K + for a bike you could also look at the Yam FZ1 (a naked form of the R1). You could also look at the Kaw zrx1200 (this looks sort of look like the KZ1000s of the late seventies). Both of these bikes are half faired,offer good seating, range,wind protection,and are under $8000 and less of an insurance risk.
Sportbikes
In addition to the Yam R1 and the Suz 1000...
I like the looks and sound of the Suz TLR 1000. This is a V-twin (All the bikes above are inline 4). Not as fast as R1/GSXR1000-750/929 but has a lot of low end torque. Another you could look at is the Honda 929 and the Kaw 9-R. Both are comfortable. I think the Kaw is really underated. I think Ducati should not be on you list. I like the look and sound but there are more powerful machines out there. While you can get a 996 for $17k+ (not sure about prices around you) the maintance is outragous. A valve adjustment (About every 6K miles ) is $800-1200!
I think Aprilla is a nice ride and you never see many around. Bad thing is you only have select number of dealerships to chose from. Truimph Speed Triple and Daytona are wild sounding machines. You can't really describe the whine/roar of a inline 3.
Runners up
Honda VFR800. V-4 fuel injected bike. Cycle Worlds bike of the year in 98. never rode this one. Rode an older VFR750, liked it.
BMW 1100RS/1150RS/1200RS- big dependable and expensive. will go 120K without "major" problems. I heard jut little stuff goes, voltage regulators,rectifiers etc,. Lots of happy owners.
** Don't get a Buell. You already have a Harley****
I hope I helped. My biggest suggestion is just sit on stuff you like and make another thread and we will help you choose you new "childhood"