I’ve had the J-45 and Southern Jumbo for a few months now, love the J-45, like the SJ. Neck comfort better on the J-45, and the sound..just a lot different than the standard. I’ll keep it, SJ will go consignment at Dave’s I think.
Martin Authentic 1939 D-18, aged, not aged, another one with a great neck, 1-11/16”, and again, sound very different than standard. This is on the radar, but the SJ and maybe 0-18 will fund it. If I can find one under 5K, rare but possible.