Between the 1050 and the T-bird, I would choose the Sprint. If you are keeping the America, would you ride it if you had the T-bird?
If you don't ride twisties often, like the cruiser and just want more power, I'd trade the LT for the Thunderbird.
I rode my Sprint over 80,000 miles and loved it. We rode the Dragon, made it to Key West and commuted on the highway.
I am definitely biased but if I lived in flatlands with straight roads, I might prefer a cruiser.
It was mentioned above that a cruiser offers foot placement options for changes in position. When I had a Yamaha with foot pegs out in front of me, it had me sitting with my lower back rounded in a way that hurt after a couple of hours and killed me on a multi day trip. I added highway bars but the best relief was riding with my feet on the passenger pegs. That put my spine in a proper allignment. The Sprint's footpegs had my back properly aligned and is comfortable for days on end.
