Comments about MSR Lightning Ascent Snowshoe (pair):

The first place I used them was the Belknap Range in NH, I went from Gunstock Mountain parking lot to Mt. Major parking lot. (7 mountains)
I wore Koflach Arctis Expe Plastic Boots size 11, they stayed secure all day.
The second time I used the MSR's was on two different mountains in the Belknap range but I wore my Nepal EVO GTX Mountaineering Boots, secure all day too.
There was a couple sections that allowed me to try out the heel lift and traction, the heel lift is a big plus in the steep terrain and the traction was very good. One section had me wishing I brought my Crampons, though it wasn't steep and icy for long it made me appreciate the traction the MSR's had. I originally wanted these because my Easton Hike snowshoes were to big for the trails in the White Mountains and the traction was not made for steep terrain.