I don't have a DoAll, but blade wisdom is not brand specific. I went for M42 bi-metal for everything.
My bandsaw is new, and has a full-torque variable speed controlled motor. I can slow right down for cutting metals. One of it's first jobs has been cutting cast iron chunks, and angle section steel.
The 6TPI constant pitch high clearance blade is for wood, used at higher speed. I also have a 2-state blade, variable pitch between 6TPI and 10TPI. Another blade has variable pitch between 10TPI and 14TPI. Finally, one with constant pitch at 14TPI. They cost £18-50. So about $21 USA each. Carbon steel versions are there, but not so much cheaper that I wanted to try them.
Choosing these are the actions of a guy who starts out not knowing much about blade performance and longevity, so I figured if M42 is the toughest, hardest, most high temperature performing bandsaw blade, it will work on the tough jobs when needed, and just breeze the easier stuff most other times.