Well I don't have any insight on the MSR snowshoes, but I do have at least another brand for you to consider. Last year I got a pair of Northern Lites brand snowshoes, 25" Backcountry model. At first I was skeptical, as I was using 30" tubbs. They are incredibly light, about a pound lighter than the MSR lightning at least according to the websites. Some background on how I use mine for comparison...I'm about 190-195 lbs. I wear them about 3-5 days a week working outside in northern wisconsin, mostly flat but some hills out in the woods, pretty deep snow, no trails, usually below zero often down to -20. Also, the straps fit a fairly large pac boot, I have lacrosse icemans. I haven't had a problem with the quality of the rubber straps at all. As far as I can tell, the only major advantage of the MSR is the add on tails. They are also light and agile enough to not be cumbersome on packed trails.
Anyway hope I could help a bit.