u/Sunkeren

I have finally completed my Seiko diver's collection. I now have these four watches, each faithfully true to its historical predecessor.
I love the classic look of the SLA017. Its smaller size and the domed sapphire make it look distinctly vintage. However, I found it uncomfortable to wear; its compact diameter combined with its thickness makes it float on the wrist.
The SLA033 is my absolute favorite. I bought my first Seiko watch earlier this year—the SPB257—and fell in love with it immediately, although its build quality didn't quite meet my standards. Then I got my hands on the SLA051. What an improvement over the 257! When I spotted a near-mint SLA033—the ultimate Willard (which we call the 'Abalone' here)—I knew I must have it. Overall, it is a masterpiece, but its proportions don't sit perfectly on my wrist, and I accidentally dented this baby on the very first day I wore it.
Before buying the SLA039, I was hesitant about its size and thickness; it seemed there was no chance it could sit comfortably on my wrist. Once the watch arrived in mint condition, however, I was surprised to find that it is actually the most comfortable piece in the collection. I think this is due to the curvature on the case back, and it wears smaller than the dial size suggests. The Ever-Brilliant Steel gives it an amazing quality, and in my opinion, it is the most premium piece so far.
The SLA041 is another story. I had never thought such a huge watch would be wearable. To my surprise, it is quite comfortable if I set aside its weight for a moment. The build quality is exceptional; it looks exactly like a well-built instrument. I replaced the ceramic shroud with a black titanium one, which gives it a sharper profile and sheds some weight.

This is a stunning watch, the everbright case feels very premium.To my surprise, it is very comfortable to wear. Its size and weight made me hesitant before.

Now I have the SLA017, SLA033 and SLA041 in my watch box. I need the last piece to close the loop and that one must be a Marine Master. I am considering the SLA025 and SLA039. The SLA025 represents historical truth the other represents material perfection (SLA039's Ever-Brilliant Steel).If you were building history of Seiko professional divers, which watch would you take for the final slot?