Buying a Navitimer... and i've got noob questions.

[MrBBridge]

Hi everyone.

First post - Apologies if this has been covered elsewhere.

I've decided to buy my first grownups watch and I'm struggling to get my mind settled on a particular model. I've mostly been looking at online vendors but would happily travel to pick it up and would be grateful for any recommendations.

My budget ideally is around £2.5-4.5k. I think my preferred model is the gold cased navitimer 01 (46mm) with the in house movement and see through back. However this seems to be out of my budget and I haven't found any second hand models yet.

So I've been looking at the World (blue dial version), which seems to be more inline with my wallet but I'm trying to understand why there is such a price difference and why the second hand value /depreciation seems to be different too. I understand the World doesn't have the new in-house movement - is that the only real difference (although it does have the extra complication with the gmt function which I think i'd find quite useful). If so how bothered should I be? I've read a little around the movements but I'm quite new to watches and don't really know how to make a value judgment on the Bretling 24 vs the B01. One comment thats stuck with me is: 'you buy a Navtimier for the dials not the movement so don't worry about it'... is that fair?

Thanks very much. Great forum.