wyrdness

Out of that list, I'd probably go for the Falco or maybe the SV Thou. Both are apparently very underrated bikes. The Thou got some very good reviews, but just wasn't too popular.

I wouldn't touch a TL with a bargepole, but a lot of people do seem to like them.

SP1/SP2 are really track bikes. I've heard that being so focused makes them a poor choice of road bike. If you're after a track-day missle then go for it, otherwise look elsewhere.

Maybe you should look at the Triumph 955 Daytona too. It's not a twin, but combines the best characteristics of a twin and an il4 and is an excellent road bike, by all accounts.

Just my opinion. I expect that others will disagree.