I’m just a simple guy with a simple LP 12. I’ve never used a mono cart. What I can tell you is, I had a Rega and it was “ok”. I just got my OL silver and the improvement is striking. I don’t know what deck you are using so I can’t tell you the difference in resolution you would experience between the two but in my opinion, if money is no object, go big. Can’t hurt. If it is an object, don’t overthink it. Get the silver.
There are a ton of opinions on these forums and passions run high. I run audio stuff I’ve read online by my trusted audio savant because of his vast knowledge and because he’s been doing this most of his life. He runs a bespoke audio showroom along with his father. Previously he tuned my LP 12 to perfection. Half the stuff I ask that I’ve seen online, he shoots down as nonsensical providing technical explanations. This guy flys around the world setting up $100k+ systems for wealthy clients. He said that my silver is a good arm. He knows my budget and has always been a straight shooter. I kind of trust him. Don’t let the online white noise create confusion. Don’t obsess. Follow your heart. Enjoy the music