Hugh S,
I vote for the 149. Mostly due to the simplicity of it. Everything is easier to work on than a 582.
Add 1" spindles and all the "Super steer" upgrades.
Side panels are a PIA with a loader.
Do you have the loader? Which side the spool valve is on vs. what side your hydro lever is on may affect your choice.
I have a "work in progress" 129 loader tractor. I added a 3-turn worm gear to the steering box, super steer axle and 1" spindles.