Klipsch HS-2 ($249 vs MSRP$299) or the Mariner 300 ($249 vs MSRP$499)? Based on the higher MSRP the Mariners seem the better choice, but I've read very good reviews on the Klipsch. I need a pair for my rear deck (16' x 25'). Speakers will be outdoors but under cover. Any suggestions, advice welcome.