Welcome to the forum @schwenstein and @nosearch. There is a lot of good info on this site and many knowledgeable members willing to help out.
The Portuguese have a few different complications:
The 40mm chronos are pretty accurate and the 42 with power reserve are considered NWBIG.
- There are working Power Reserve indicators. They work, from the perspective of counting down the reserve from 100% to 0%, but these don't have a 7-day reserve. The Big Pilot has the same movement and power reserve and mine keeps about 72 hours. So, if it says you have 3 days left on the indication, it's more like a little more than a day or so. You would never be able to notice this unless you were looking at the watch without interruption for at least 12-hours. So, this isn't a tell.
- The chronographs, from my understanding, all work correctly.
- As do the annual calendar and advanced complications. But those all cost well over $50k or more in GEN. So, you have to ask yourself, if people see me wearing a watch that cost the same as a 3-series BMW, will they believe that it is GEN? And I agree with the post above just stay away from these from the perspective of reliability.
Use the TDs on the site to find the models you want. In my experience, JTime has a really good site with filters to do research. I haven't purchased from them, so this isn't a TD recommendation, I just like their site: https://jtime.io/
These are considered good reps (lots of color options): https://jtime.io/us/portuguese-iw371606-ss-zf-1-1-best-edition-blue-dial-on-ss-bracelet-a96355.html. These are the power reserve models that I believe are still considered NWBIG (also multiple colors): https://jtime.io/us/portuguese-real...edition-on-black-leather-strap-a52010-v2.html
Would like to add if you are looking for the 40mm chrono, a better option may be the IW3714 with the closed case back. It is slimmer than the IW3716 too by 0.5mm.
I missed my Port Chrono.....what a classic watch this is.