Non-Rolex Watch Trade Question

[HRC-E.B.]

Seeking the advice of knowledgeable WIS, and thought I might get more brand neutral advice by asking this here as opposed to a Breitling or Omega forum.

There are two watches that I intend to get in the near future: a Rolex Explorer II or GMTIIc (not sure which of the two, as I love both and see pros and cons to both) and the new PO GMT (because I like POs and find the 43.5 mm watch is the best size available, and looks great with the darker bezel).

On the other hand, since I'll be getting a Rolex 4-hander, a GMT PO may be overkill. Which takes me to today: I am selling a mint 1-year old Breitling Chronomat 44, with full set and warranty, to fund these watch purchases.

I am offered a straight trade for a LNIB, never-worn Omega Planet Ocean 42 mm.

I am seeking your advice as to the values of the watches in that trade. MSRP on the Breitling (with in-house B01 movement) is $8960. To my knowledge, it's difficult to get a warrantied/full set in-house Breitling for much less than 25% discount. (Grey watches sell for less.) I don't think it can be bought new with full papers and warranty for much less than 6720. On the other hand, it does not appear to sell easily on the used market for more than $4100, notwithstanding the fact that it is a lot of watch for the money, with in-house column wheel and vertical clutch chrnono movement, etc.

The Omega has a retail price of $6200 and can be sourced for a 25% discount, meaning I could get one brand new for $4650. People post LNIB samples for about $4200. Not sure how much they end up selling for.

Assuming both watches are in 95%+ condition, from a value standpoint, would you say a straight trade of one for the other is fair, or would you think that additional compensation one way or the other would be in order?

Thanks for your thoughts.