Vectronix LRFs are in a class above anything else available to civilians. For your budget go with the Terrapin X if you want connectivity or there are some great deals on used original Terrapins. I’ve had the original for over 5 years without and any problems. They are mil spec and durable...
When you wet tumble you are taking everything off the brass. After tumbling and drying the brass put it in a dry tumbler with several gobs of NuFinish polish and it will stay shiny forever. Or until you wet tumble again