H Rated Tires

I have a few thousand miles left on the original Dunlops 5000 SP tires and I was planning to replace them with the Michelin Cross Terrains. When I went to Costco to take advantage of their current $60 discount they told me that they did not carry the tires for my 2002 ML-320. In 2002 Mercedes switched to H-rated tires and Michelin only makes an S rated Cross Terrain in the ML's size. I also went to Tirerack and I could not get the Cross Terrain to come up as an option.

The choices of H rated tires in the ML's size is rather limited. Does anyone know why MB changed to H rated tires in 2002? Any recommendations for H rated tires other than the Continental or Dunlop OEM tires? Although 90+% of my driving is in non-snow conditions, I still want a tire that also performs well in the snow for the ski trips to Lake Tahoe.

Thanks,

Orlando