Chuck-
Good point. I'm basing my decision on price, my own comparison of the published specs of different drill presses, as well as the general reputation of Shop Fox and Grizzly products. I did go into Klingspor this weekend to look aver a Shop Fox drill press they had on the floor (not the M1039) and found the quality/fit/finish to be about the same as the Jet and the Delta. Grizzly owns Shop Fox and the Shop Fox M1039 is the same machine as the Grizzly G7948 (just painted white and with 2-year warranty). The way I look at it, for just a little more money than a 17" DP would cost me, I can get more hp, more reach, and a larger table. I do give up 4 speeds with the 20" DP but I don't think that will make much of a difference. In its 2006 catalog, Grizzly does advertise the G7948 DP as a "Popular Woodworking Editor's Choice" but I haven't located or read the review. Beyond these 20" DPs, there seems to be a pretty large price difference for material differences (i.e. variable speed and/or 6" of travel)....more than I was willing to spend.
I can send you the manual for the M1039 and you can download the manual for the Grizzly G7948 from Grizzly's website to compare them. I tried to post the M1039 manual here but it is too large to be posted in this thread (anyone have any other ideas besides emailing it?). If you PM me your email address, I will forward it to you.
I know my approach isn't that scientific or thorough (I need a new DP now) but it was the best I could do in the time I was willing to commit to it. That's why I started this thread asking for advice. I am still open to any advice people are willing to offer.