Flush or Surface Mount
Having been bitten by the boating, musical instrument and audiophile bugs I am fiarly well rounded in this department. For my interior speakers I purchased a set of Paradigm Sylus 350's and they sound amazing! It would be hard to beat the sound quality, imaging depth and soundstage of the Paradigms at any prie in an indoor outdoor speaker.http://www.paradigm.ca/Website/SiteParadigmProduct/ParadigmModels/Stylus/StylusSpecs.htmThey are pricey but you get what you pay for. I have a pair of Pioneer 6 1/2 coaxials outdoors but I'll be replacing those this year with a pair of JL Audio speakers. I installed the JL Audio's on a friends boat last summer and they blew me away. We used 7 1/2 inch JL's and they really had a nice way of giving the full rage to the outdoors.http://marine.jlaudio.com/products_components.php?prod_id=379Everything depends on budget and what type of installation you want to do. If you're an audiophile junky like me it can get expensive and frustrating trying to find good sounding indoor/outdoor speakers but if you look hard and listen a lot you'll eventually find them.As for music I listen to it all but mostly acoustic based recordings. I listen very critically at home on a two chanel esoteric tube system but I try and relax and ignore the lack of sound quality on the boat. What do I listen to: Miles Davis, Dave Brubeck, Norah Jones, Alison Krauss, Liz Wright, Cassandra Willson, Jimmy Buffett, Jack Johnson, James Taylor, Bela Fleck, Dianna Krall, Steely Dan, Alicia Keyes, Spearhead, G. Love, Michael Franti, The Dead etc.etc.. So I listen to just about all types from soul to clasical.