Now the question, it came with D'Addario strings...if I measured them right 11-52.......
What strings is everyone playing and why?
Well, everyone is playing different strings, because we all have our own favorites.
The factory fitted the guitar with light gauge...I'd bet your measurements are accurate. You could probably go up one gauge of strings and not need a setup...any heavier than that and you could encounter clearance issues, not to mention perhaps needing the slots in your nut widened.
There are two "schools of thought" on the forum regarding strings....one group says strings are strings and change them frequently, the other says find a set you like and change as often as you must. Which group are you in?
Re: your comment regarding the Martin comparison....we hear that all the time here on the forum. If only Washburn would make sure that their dealers were well stocked with guitars people could play they would enjoy greater market presence, but too many of us find limited stock. I have another question....did you get to test drive anything other than a dreadnought body style? Washburn makes a great line of parlor guitars, as well as other non-dread body styles such as mini-jumbo, grand auditorium, you get the idea. Sadly, almost all I see in most B&M music parlors is dreads....I have two of those, have about decided that I might well sell one off so that I can buy a DIFFERENT Washburn body style.
I do prefer a well-rounded crew at the ready when I enter the conservatory

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Congratulations on the score, and cheers from.....