[improviz]

Resale should be strong for either one....based upon past retail and present resale, I'd say that unless we enter another Great Depression (don't rule it out), you won't gain or lose appreciably more/less on either watch than the other.

I think that resale should stay about where it is for the Sub, as the SUBstantial price increase on the new one should keep it from taking a substantial "new kid in town" price hit, although it might still have a nick to its price once the new ones are more commonplace...the GMT, otoh, has already had some exposure to the NKOTB, and seems to be holding steady price-wise.

The GMT will hide the scratches better with its brushed finish, and given that it's SS, it won't scratch as easily as the 18K on the Sub....so if you're rough on watches and anal about how they look, the GMT would probably be better for you.

As to which one floats your boat in the looks dept., it's personal preference, really...to me, the blue TT Sub is one of "the" iconic Rolexes (though having said that, I opted for the black TT sub after lots of back and forth), but the Coke is also iconic (though the Pepsi is the more popular of the two), so either one will suffice in that dept...the TT has a bit higher "bling" factor, if that matters one whit to you...

Bottom line is, see if you can find somewhere that has both in stock, A/B the two, and decide from there. Either way, you can't go wrong, both are beautiful timepieces.