I've got one pair of ascent 4 pairs of 90 percent and one pair of timberline. The ascent I rarely wear, but they are nice for september bow hunts. The 90 are most versatile (like the name) and I wear these most often. If it is super cold and snow on the ground, the waterproof butt and knees of the timberline are tough to beat. They are also a little heavier than the 90 percent. Combine the timberline and the traverse bottom and you can brave some COLD weather.