Wow, your fountain pen journey has been much broader than mine. I've been in the hobby for almost 9 years and out of all of those I only owned a Lammy 2000 and an TWSBI Eco. But I also have other pens like Opus 88 and entry-level pens - like the faber castell Loom - and I'm quite happy with their performance.
Considering all of the above, whatever you do with Sailor, make sure that you can actually try the pen before even considering to spend money. Sailors are that kind of pen. I bough an entry-level Sailor - a PGS with a Fine-Medium (FM) Nib - after being in the hobby for 7 years and I was extremely disappointed with how it wrote.
It is such a shame, because the pen is beautifully built, feels great in the hand, and has aesthetics that I love. However, they tune their nibs in a very particular manner. The FM that came with my PGS feels much closer to using a sharp mechanical pencil than a regular fountain pen.
Some people call it the Sailor feedback, but honestly, for me it just feels scratchy. Unless you use extremely glossy paper, it is a frustrating experience.
Now idea about higher ranking models with broader nibs.
Just my two cents.
Looks like the screw is made of poor quality metal and it corroded