I tune with a winterstiager micro 71 and its pretty much set up for a 1 degree base, and anywhere between a 0-4 degree side. most skis that come out of our shop eather have a 1 and 1, or a 1 and 2, depending on the ski(1 and 3 for atomic) We also have no problem meeting customers demands of differant angles, if you want 2 and 2, no problem.
As far as hand tuning vs machine tuning its always a huge topic. some people think had tuning is sooo much better, and it can be if the operator of the machine is a retard. but if the operator of the machine knows his shit, i beleave that it can be way more precise. To get highly precise angles, i use whats called a trim disc, which essentialy is a spinning ceramic disc that cuts a new edge, instead of what most shops use ( a belted edge, which is more of a sanding down process which does not have as good as results as a trim disc does.) A trim disc has an auto feed so your cutting the same amount through out the whole ski, where as belted edges are at the operators feed rate which results in inaccuricy.
ahh hope that helps
I got 2 sets of New in wrapper 04 Scratchs for sale, both 174's, one with Look racestock bindings, one with rossi scratch bindings. PM me with a resonable offer for eather.