I liked the Adventurer.. really cool bikes. Loved the rear fender....
I have a Legend and though I can't find my sources of information now, I checked once and I'm pretty sure the hp is the same across the board. Just a change in the riding position mostly and the T-bird had the shiny bits.
The Legend is a really cool bike.. love that sucker.. torque from here to there and just loves rpm's, 17" wheels front and rear.. single front disc brake though but it's certainly not lacking for brakes. The riding position is great with feet under you but the seat is a bit narrow for my butt.