I have used HC-110 and Agfa APX 25. Agfa is really easy to develop, but I recommend that you dip it in a drying agent after you finish washing it. I have used Kodak Photoflo with good results, and I now use Edwal LPN with distilled water. One commercial lab I've used, which incidentally uses Rodinal, very often put irremoveable streaks on the film due to faulty drying.(posted 9204 days ago)I have used T-Max 100 with excellent results, but I am extremely precise with all of my developing procedures.
Tech-Pan is fine with Technidol. I haven't yet used it with Xtol. Just mix the developer as directed, and it's fine. Technidol can't be used with anything other than Tech-Pan.
If you want to compare the film grain between the Kodak products, take a look at Kodak's book of black & white films. There is a page in there which compares about eight of them, and Tech-Pan comes out the undisputed winner. A violin (some similar stringed instrument, anyways) was photographed with each of the films, and then a section of a 13x enlargement was published next to the film. Tmax 100 was excellent, but Techpan was the clear champion. The enlargement looks like a contact print.
Believe it or not, Kodak produces Techpan in 8x10 sheets.