Crossrunner: I haven't tried one yet. Will probably do next spring. But it's a pretty heavy bike for its class. Not sure you're missing anything there
Varadero: a thirsty, lardy, heavy pig. You wouldn't want it
Transalp: great little bike. And probably one of the best competitors for the V.
Kawa W800: haven't even seen one yet in real life so can't really comment
Yamaha YZF-R125: the sportiest 4-stroke 125 you can buy. But not really much better than the Honda CBR125R. Definitely not powerful enough for a track day. You'd be better of with a CB500 with upgraded brakes and springs.
Yamaha MT-03: absolutely great fun! Not really a competitor to the V though. It feels a lot less powerful. But it is so much fun to ride on tight twisty roads. You are sitting very close to the handle bars, feels almost like you're directly above the front wheel. So it steers soooo light and razor sharp. But not enough power for 2-up, not as comfy as the V on longer trips either and small fuel tank.
Suzuki GSR 750: a decent bike, and cheap. But it shows in the finishing. a lot of the wiring in the front is really exposed and the paint quality is not exactly top notch.
Bandit 650: very decent and capable bike. For smaller people probably a good alternative to the V.
But I think the coolest bike you guys aren't getting is the XT660Z Tenere. I did 30000km on mine before it got stolen and it is just an awesome bike. Eats miles and miles of twisty tarmac roads, hardly consumes any fuel of the 23l tank. You can go 450-500km before you'll run out. Put some knobbys on and it is perfectly capable of handling single track muddy lanes or desert trails. The plastic drop protection works perfectly and is very cheap to replace. That bike would imho be an instant hit among the ADV crowd in the states.
But Yamaha apparently doesn't believe in it.
Same for the TDM900 actually, which they have been ignoring for years now. Hasn't had a real upgrade since it was introduced back in 2001. Has even never been sold in the US. Nevertheless it was a top seller in some European countries. And after 75000km on one I can honestly say it is an awesome bike and a direct competitor to the V. Can't even remember how many times I embarrassed the one-piece-leather CBR20000RRRRRRR-Ultrapower-Iridium-visor crowd on twisty mountain roads with it.
I think it is because the US market is still just too preoccupied with Harleys and super sports bikes.