I'm not really a Martin guy, not because I think they're bad guitars, but I've just never played one that was comfortable to me. I would buy one in a heartbeat if I could find a neck I like. They're either too chunky or too skinny. I agree with Bulldog 100% :
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A guitar with a neck that is not comfortable to my hand would be a deal breaker for me no matter how great it was.
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I too sadly parted with a couple of great guitars, a '72 Gallagher G-70 ( just 50 digits away on the serial number from Chris Jones' G-70) and a '56 Martin D-18, both because the necks were too slim and the string spacing was too close. I still think alot about those guitars, but the necks just weren't right. I had the Gallagher for over three years and I could just never get used to it, so it's not like I didn't give it a fair chance.
Hopefully this may help your decision: My brother has a SPD-16R. It's a D-16 with special appointments such as gold tuners, fancier inlays and all gloss finish with Rosewood back and sides. Other than those extras, it's still a D-16 and it's a great, wonderful sounding guitar. It impresses me every time we get together on how good it sounds. (still don't like the neck though, but that's just me). I did a guitar comparison / contest awhile back and some of the folks who commented said they favored the Martin even over my Collings (not knowing which guitars they were listening to at the time). It's still here on the forum somewhere if you 'd like to here a sample of the D-16.
By the way, his D-16 has a 1 11/16" nut width with a low oval or c- shaped neck. I agree with the other guys too on the Eastman over the DRSGT, but a D-16 would make you a very nice "keeper" guitar. My brother has had his since new in '95 or '96 I believe and it's his only guitar.