I have one in 1/2", 5/8" and 3/4" and love them.
EDIT: I mis-read the original post. I use to have a 5/8" with 2MT taper, but now I have the ones I mentioned with straight bars that I use with the collet chuck. Much easier to use than the one with the MT. As Marvin indicates, you need a draw bar for full capabilities.