Wildpeak MTs are siped for water evacuation, but not ice, and not studdable.
Hankook Dynapro MTs are studdable but smoothlug.
Interco TSL SX2s are ice siped (sharp, zig zag lines) but not studdable.
Duratracs are studdable, with 2 rows per side, and ice siped.
17s open up more options. It's a shame I like my 16s so much.
Firestone has the destination MT/2, which has 3 rows per side and siping.
Getting into an AT, General Grabber AT3s are aggressively siped and studdable. I believe 4 rows per side. But those aren't going through much mud or snow.
At the end of it all, the Goodyears are the most widely available ones to fit me. The generals are cheapest, and the firestones are the most versatile.
</Derail>
1