B.P.
On stuff like this, I like to refer to Consumer Reports. They had an article in June 2008 about exterior paint and stain. The two highest rated semi-transparent stains were Thompson's Water Seal Deck and House and Olympic Oil Stain. Thompson's appearance was rated very good after three years and Olympic's was good but does resist mildew more than some others. It does not appear that they rated Wolman. Quite a few opaque stains rated a lot better than the semi-transparent ones.
Hope this helps!