Another vote for MSR. The tubular models are fine for flat country, but if you are climbing or side Hilling the MSRS are better. Tubular will work, but slip more.
I am sure everyone knows this, but the weight limits are not related to the ability of the Snowshoe to handle your weight, but rather how much floatation they provide. That will actually vary by snow type more than anything. I have moved to very small shoes as they are easier to plunge step downhill with. They sink a tiny bit more, but the trade off was worth it to me.