which one is the best?

[mel]

I was wondering if anyone could tell me which one of these Chardonnays has the best buttery flavor.
Louis M Martini Reserve, Russian river valley. '97
Markham Vineyards, Napa Valley, '97
Merryvale, Napa Valley, '98
Beringer, Napa valley, '98
Bernardus, Montery county, '97

Also I was wondering which of these were better to go with steak.
Alexander Valley, Caberet Sauvignon, '98
Farncis Coppola, Blacklabel, '98

or if there are any other suggestions in the 10-20$ price range that are better I would be greatly appreciative.