Hi,
good choice!
A GP classic
This TI case and black/white dial?

REF. 49800-21-651-BA6D
That would be a configuration offered from 2001 to 2006; not sure the dial is still available for TI models, as the 2006 lineup to my knowledge the current portfolio is limited to the "Pepsi" dial for the TI case.
I agree in that the black/white TI is a pretty piece and rather unobtrusive, while the more colourful variants are a little "flashy". The more monochrome variants are not that rare in Europe, so i think itīs a matter of regional preferences if they are not seen often around your place!
If you can afford, iīd like to recommend a 2006 model.
The cases, dials and straps are different in several details and i found it to be a much more comfortable piece. Itīs a little less heavy too.
Apart from that, the "ardoise" (anthracite-grey) dial is such a beautiful piece in nature!
Finally, iīd recommend to wait a week.
There might be something which is interesting for you and at least widen your choices
Cheers,
Peter