Hello and welcome to RWI!
You found the right place!
I used to like watches larger than 45mm, but as my taste got more sophisticated, I realized that most watches over 43/44mm look not ideal on my relatively slim wrist (around 159mm to 164mm, depending on the time of day). I still have my Bulova Moonwatch (45mm) which I won't sell and I actually wear quite often. But currently, my personal "sweet spot" sizes for new watches are anything between 40 and 42mm, but I overall wear and own watches in the 34 to 45mm range.
So I'm not really the right guy for particular model recommendations for large case watches, but what I think are watches over 45mm that are generally considered cool are divers like for example the Omega Seamaster Planet Ocean 45.5mm or a lot of different models from Panerai (44 to 47mm are actually in fact considered "normal" sizes for Panerai).
Other generally considered-as-cool big watches are Pilot / Flieger watches from brands like Zenith or IWC which can easily go up to case sizes of 50mm, for some extreme models like IWC's "Big Pilot" even up to 55mm, or so. I'm sure you'll discover lots of other interesting big watches as you browse RWI and the TD sites.
If you haven't already, please take some time to read the sticky threads in the new members area (in all subsections), as they contain lots of information for newcomers and, most importantly, our forum rules which you need to know, and of course ideally to follow, to get the best out of your experience on RWI!
A good starting point is this list of links to the most important RWI resources:
Welcome to RWI! :) Here are some links with interesting information and must-reads, that helped me a lot in the beginning. Hope it will do the same for you! Start reading, there is a lot of interesting information available. Forum Terms & Abbreviations, what do they mean: this will make...
forum.replica-watch.info
Also this please read this important sticky:
If you've just joined and are reading this, welcome to RWI. If you stop here, or read just the next few lines, that's on YOU, but don't ever say you weren't warned. If you are approached by ANYONE, absolutely ANYONE, offering you a watch, or a deal, via Private Message (PM), exercise common...
forum.replica-watch.info
If you need further assistance, please feel free to contact me or
@Feefo during your time as a newbie. That's what we are here for!