My set up has gear designed to be used fully balanced, my pre, DAC and Amp are all truly balanced and everything sounds better when I have everything hooked up using the balanced input / outputs. I agree that if home equipment isn’t designed to be fully balanced you don’t necessarily get better performance, sound but when it’s specifically designed to be truly balanced it’s beneficial and synergistic to have fully balanced equipment throughout the chain.
There are a lot of options on Pre’s that meet the OP’s requirements, especially when looking at Solid State pre’s. You can find fully balanced Tube pre’s but they aren’t as common.
Good Luck!