Hutchins! You wont be sorry. The cheapys will do the job but will beat you to death if you use it much, not to mention they jump around so much its hard to get close to a flat surface.
I used mine in a production body shop for 20 years and finally it got to where it didn't want to work, I sent it in for a rebuild and for a $75 it came back like new.
I do have a couple of the cheaper ones but I really hate to use them.