I wouldn't suggest treating your 84 as a beater either, it has more collect-ability than either ones I mentioned. Although I could argue the ones mentioned are a great choice since they share similar trigger systems and lineage so muscle memory switching between them is going to be very similar if not identical.
If you like the Beretta the PX4 Compact may be a good choice, but they are more expensive that the SP2022.
As for the SP2022 they are a full size pistol also and fairly blocky. They have a ton of use in foreign military and LEO, especially coming out of the academies because they are a rock solid inexpensive pistol. The SP2022 and the Ruger P89 are very popular among the uniformed LEO community as well as other uniformed security that are allowed to carry because they are worn on heavy duty belts, reliable and inexpensive. Because they see so much use in those area's they tend to show up in bulk on the used market when agencies upgrade and keep the value low, and may have the perception as being cheap because they are so inexpensive - that's JMO.
I struggle with the beater concept because, with the exception of heirlooms, I treat all of my firearms the same and if they get dinged up during good honest use so be it. The pistol I throw in my truck with a bunch of mags when we're heading out for a long weekend, driving vacation or just want a little extra to my concealment piece is an HK VP9. Even that's in a padded and divided case though.