The short answer: I go with my gut, ride the one that "calls" me at that moment.
The longer answer:
I have an FJR, a ZX 14, and the CBR 1000. I have three battery tenders and ride all three year round.
The FJR for overnight trips, and I do this four or five times a year. That's not the only time I use it, but mostly.
The ZX 14 and the CBR is a toss up and I'll ride them equally. Except if I am trailering a bike somewhere, I'll take the CBR because it is lighter and easier to load and unload.
I have not done track days, but if I do, I'll take the CBR of course.
'09 ZX 14