I use an MXR M87, but I’ve always fancied a Cali76 because of their reputation. However, the colour that the old version added was potentially an issue, so didn’t get one. Then they brought out the new version, that is less coloured and has a more informative VU, oh, oh, GAS ahead! Then I realised that an uncoloured Cali76, with a row of LEDs is pretty much an M87 (they are both based on the Urei 1176), but with a couple more bells and whistles (dry/wet blend for instance). So I’m sticking with the MXR (at least for now) and saving a few bob.
My own compressor journey came about via a recording session, during lockdown. I sent a friend of mine, who owned a FOH company and often ran the board himself (with terrific results, best sound engineer I’ve encountered and also does pro recordings for others) a copy of the recording. He suggested some very subtle comp settings, which I applied and the way the bass sat so much better in the mix was striking. Straight away I researched comp pedals and have had the M87 on my board since.