TC Spectracomp. Any small format pedal tuner. £100 max. Small enough to put on a small kitchen chopping board and slip into the front of your gig bag. You can always flog them for what you paid if you want to get more creative - so it is cost neutral to experiment. Compressors have always confused me. I know what they do, but setting them is beyond me The toneprint software lets me cycle through loads of presets using my phone passing some squeaky noise through the pickups. I like it so much I own three - one as an always on in Church, one on my pedalboard and one set up in front of my home recording set up. For me, Multi FX just give me so many options I get paralysed and never use them.