Fundamentally the nautilus is an entry level Patek, yet it trades on par with far rarer and more desirable complications. Strong indications point to bubble territory, I don’t deny that irrational speculation may continue, but there is more downside risk than upside potential. Sell the 5980 and buy the FP Journe, having such a sublime Rattrapante for the price of a vanilla nautilus is a no brainer, you will be so glad you did it in the long term......alternatively if you want stick with a Patek, buy a 5205 or 5170.