As for the OP...

No, don’t buy that 2009 Stumpjumper. If there is any chance you might ever use the bike on a trail, get a bike with a tapered steerer.

I used to not give it much thought, but 1-1/8” steerers are essentially dead, except for low end suspension. If you find a good bike with a good frame, you can ride it on any intermediate trails, and upgrade any of the components if you want and you like the bike enough. But you’ll never fit a larger steerer into a smaller head tube.

Disc brakes would be nice. But it is possible to run disc front and V rear on a newer fork.

John