Go to tirerack.com , definitely, read the reviews and look for the most dark green you can find on the surveys.
The primacy are great tires, but dunno on an MDX, probably overpriced. I do like Michelins, had Harmonies on my car for years, and they well-outlasted their 80k mi warranty period plus some.
Whatever you get, do the finger test. My measure of a "good" all-season tire. Stick your pinky finger in the grooves. If it fits, AND has good exit groves out to the edges, it will clear snow and water well, and probably drive really well. Downside is this requires seeing the tire in-person, but pics may give you a good approximate idea. That's just me, though... and car tires. SUV tires, might want to try to get a pointer-finger in the groove.
1985 Honda Shadow vt500c
2000 Mercury Mystique LS 2.5L V6 - SOLD
2003 VW Jetta 1.8T wolfsburg
2005 Acura MDX Touring 65k mi Steel Blue