Aftermarket diamond value VS Authentic Rolex diamonds

[bubble160207]

Hey guys not posted for a while, since I last posted on this forum I bought myself a TT sub after reading JJ's review I had to get one...
Now Im approaching my 30th and have been told to "pick" another Rolex as a gift - lucky guy I know! Anyways...
Im looking to spend around £2000gbp(Im in the UK but dont mind buying online ebay etc)
I want a datejust ss , and am expecting to get around a 96 ss with custom diamonds/bezel for my price range

I have fell for one on ebay from melrose diamonds but after researching have found many bad reports for this seller, gutted as I really liked what I saw

http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT

My question is, aside from doing the common sense stuff if I buy online (Im looking at Beckertime at the moment) like checking with my AD for movement authenticity lost stolen register etc, what are the pros and cons on aftermarket dials and bezels - I know the clarity etc will obviously not be as good as Rolex but does it make that much difference on resale/insurance etc?

Also a lot of these online watches (melrose by the looks) seem to sell a face from a genuine rolex then everything else is replaced, the sapphire glass, the bracelets, the diamond bezels are custom - does this make that much difference or only if trading into an AD?

The watches on sale in the US, especially online are plentiful with custom diamonds and bezels - there are not as many in the UK and the US ones are significantly cheaper, again, especially the custom diamond styles

I know what I want, I just dont know where to buy one...