My go-to guitars (in order) are: koa GS, Rainsong, 414, 424. The others get played infrequently -- maybe every third month, or if I have some specific need or want (baritone, 12 string). Sometimes if the strings are getting aged, I will use a particular guitar for a week or so to practice my various alternate tuning songs. I hate to break new strings going through 5-6 different tunings repeatedly.
I know it is sacrilege to admit here, but I have way too many guitars these days. If I can get a fair non-giveaway price, I would gladly sell at least five of them, including the Martin. The Rainsong and the 424 will be part of my estate, ie: the last ones to ever go.
It should be mentioned that some folks prefer the legacy maple tone, and many prefer the newly revamped 600 series tone. But those new models do not include jumbo bodies, unless you count the GO / 618 model. Jumbos (x15) were discontinued in 2010, and probably won't ever be resurrected.