Back for more advice - Adding to my collection of one

Several months back, I posted a "help needed" add for my Seamaster. As is turned out, the watch was an 18K golden Seamaster my father gave me ~20 years ago. Based on the excellent advice received from forum members (thanks again Desmond), I had it professionally restored and wear the watch a couple days each week.

I'm now ready to add another watch to my growing collection of two. Currently, I have the 18K gold Seamaster and $30 USD Ironman Timex. I'm leaning toward buying one of the older Speedmasters and trying to learn a little before purchasing. I like the looks of the older "moon watches". However, there seem to be sizes - ~38MM and ~42MM and several different movements (manual and self winding automatic?)

I'm looking for a "near everyday" watch (sorry Timex, you are about to be retired). My budget is up to ~ $2,000-3,000 USD. Where do I start? Mike

There's only one Moon Watch to buy.

The Speedmaster Professional,
Caliber: Omega 1861
Famous manual-winding chronograph movement that was worn on the Moon. Rhodium-plated finish
Size
Gents
Case Diameter: 42 mm
Crystal
Hesalite crystal


But thats just my opinion !.😁

The smaller size Speedies are automatics, with various movements inside - some nicer than others. If you want a nice moonwatch that isn't ludicrously expensive look at the mid 70's caliber 861 versions. Be careful because there's a lot of shenanigans surrounding them since they're so popular.