Almost missed this thread, or at least I missed it for an entire week somehow...must have been all that typing on the off-topic forum regarding sheep, cows and organic farming Robert Mickley and I got into.
Anyway so much for nice guys always finish last huh? I think you will like the mortising machine...its always been on my list of got-to-have's someday too. I am actually surprised you said so many nice things about your drill press mortising attachment, I got one, BUT like you said it ties up the drill press. I had some frustration issues with it too, but maybe now with a bit of age on me, I can be more patient on the set-up and make it work. If anything good came out of the mortise attachment for the drill press its this; I have learned to enjoy making mortise and tenons by hand.
Still for 40 bucks and a helping hand with the refrigerator, I assume you don't mind giving up the chisel for a machine? (Assuming the chiropractor visit was covered by health insurance anyway )
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"