In my mind you need 3 rigs to do a quick professional job.
A bathroom rig, a sink and floor drain rig, and of course
a main line rig. I've done this for a living before and I'm
curious about why some guys are so worried about having a
machine that does "everything".
(I've seen posts on the site that suggest this)
In my mind, to save the hassle of cable swapping and
poor machine perfomance, just buy the three machines
and save yourself the time and frustration in the name of saving a buck
on an extra machine. In order to run a buisness you'll need
at least the two. Why not buy the third and be complete?
I can't see loading a mid range machine with 1/2" cable to run a main,
or swapping cable down for a bathroom washbowl or tub.
To me it's time consuming and un-professional.
Tell me if need to be corrected on this line of thinking.