getting the Panerai itch again - which GMT?

[esm]

you know the feeling.... while im still very keen on a 210, something about the Luminor GMT has caught my eyes

done a quick research and there are a few variants of Luminor GMTs i can find -

PAM088 - strap (MSRP £4.4K)
PAM160 - steel bracelet (£4K)
PAM161 - steel case, titanium bracelet (£5.9)
PAM244 - different dial design to 88? (£4.3k)
PAM297 - steel case, titanium& steel bracelet (£5k)

so, my question is.... which one is "more popular" and in turn will "retain" more value in the future?

im thinking of getting a PAM160 instead of the PAM088 (but i do preefer the 88 dial design though), so i have a Panerai bracelet (it is so damn expensive to buy seperately), and i can change to straps to mix it up.

another thing with the 160 is that the pre-owned price seems to be higher than the pre-owned price of the 88 (according to the website im ckecking atm).. is that the real case?


then again... there is a PAM355 (sexy piece though, but no idea what the £ is... i have a feeling it is more than any of the ones above)



what are you opinions and suggestions, thanks?