I had a Martin and never really liked it. The bass always sounded muddy to me. I sold it and bought my first Taylor. Then I bought another, and another, and another. My latest is a GS Mini that sounds really good amplified, and better than I expected when played without an amp.
I wish I had known sooner you were looking for a travel guitar. Since I don't fly for business anymore I would have let you try my Baby Taylor. Great action, acceptable tone. So it goes.
Is the backpacker you bought the old triangular body?