As of June 2015, deck stains and sealers with excellent customer reviews are Thompson's Water Seal Advanced Tinted Wood Protector, F&P Cedar Exterior Wood Stain Finish and Preservative, and Olympic Maximum Tintable Multiple Solid Exterior Stain. All receive customer ratings of at least 4 1/2 out of five stars.
At Amazon.com, reviews state that Thompson's Water Seal makes their exterior wood look like new. The product also lasts a long time. Top reviews at Home Depot's website mention that the F&P stain applies smoothly and evenly, soaks in well and provides good coverage. Lowe's online reviews for the Olympic stain say that it is long lasting, covers well and dries quickly.