My wife and I have sanded and refinished our 12' x 12' deck 2 or 3 times now after having it power washed. I'll ask her when she gets home which 2 brands we used. Junk whatever they were and promised.
Pretty sure one was Thompsons.
Both lasted one rainy season. Of course we live in a 3 month rainforest but when you spend more $$ to buy a guarantee for something to last x amout of time, only thing to hope for is luck I guess? And we didn't get lucky.
When the better half gets home tonight I'll ask and post then.
