Stain choice

North Georgia - We have very large multi level decks (1000+ sq feet) some direct sun, some covered.  Original decking is a little over a year old with additional new areas that are about 4 months old.  Pressure treated pine-never treated.  Contractors have suggested sikkens or structures nature blend deck stain.  Since our deck is so large, we want to make sure we select the best product for performance and maintenance costs.  I’ve seen your sikkens review - do you have any experience with the structures brand?  Just don’t want to make the wrong decision and suffer the consequences with years of maintenance nightmares.  Any help would be appreciated!