I had a Triumph Scrambler, Versys 650, Speed Triple, FZ8, MT-01, old virago bobber, and tried bikes from pretty much all origins and configurations. From 20HP to 180HP...
One thing I can say is the FZ8 doesnt have a boring engine it just needs a proper exhaust to free the music:
Loved the FZ8. All day comfy (I had the naked version as you see in the vid). I sold it cause I was going way too fast all the time. My brother has the Fazer 8 and loves it.
Also really enjoyed the SPeed Triple it was a blast. But again, was risking my license every day, rarely a day where I didnt go above 200km/h.
In the end I concluded that no bike is perfect in all aspects. And that 4 cylinders are AWESOME on a track, but on the streets, to really enjoy their potential, you have to ride way past speed limits (3 cylinders a bit less, but still...hard to ride slow :P ).
After many bikes this is what I bought:
Forget the race for power, cause whatever it is you'll get used to it and want more. I was intimidated by my Speed Triple at first, and 2 months later I was shopping for a sprocket swap to increase acceleration (and the front was lifting when exiting curves at 130km/h, bone stock.)
From all the bikes I've been on so far my favorites were the Triumph Scrambler 2009 and the 2007 Yamaha MT-01, for their simplicity and character:
The MT-01 only has 90HP and weight a hefty 570lbs, but has 110ft-lb of torque. So you ride on the torque all the time, I shift at 2500rpm most of the time with as much satisfaction as shifting at 14000rpm on a crotch rocket. It just makes me smile whether I'm cruising at 50km/h or scrapping pegs in the twistied, or just looking at it through the kitchen window like a kid on Christmas morning.
So my advice, go with a bike that you think looks good, and has character. That way you'll be happy when you look at it, and even more when you ride it, if it doesnt make you want to ride it just by looking at it, find something else
Really it's not how much power a bike has, it's the way it gives it, and the sound of the bike. My Versys is my utilitarian bike, it's a great all around bike don't get me wrong, but I don't get excited by looking at it (specially not since I set it up as a touring bike). It's still loads of fun in the tweasties. But my solo fun bike is really the MT, and I can't imagine myself ever selling it.
Oh and for wind protection, I've mostly had naked bikes and with the Versys I realize that I was way more comfortable on the highway on nakeds as you dont have as much turbulance, and when it's hot you welcome the fresh air, when its cold, well ok you freeze your ass
Until I get my MRA windscreen, the MT-01 is WAY more comfortable to ride even 2 up all day long, just have limited luggage options, as the Versys I can carry quite a few things in the TRAX luggage.
Hope this helps.