2-3 guitars, change guitars 2 times during show. Change strings once a month. 2 half stacks, back up. Fly gigs, fly rig (fits in carry on) 2 guitars enki case.
I have a 79 LPC - Duncan Custom in the bridge and Pearly Gates in the neck. Removed ash tray, wired old school and grounded. It's worked for 34 years to my ears...
At the cheap end for ear buds will be what comes with Shure, Audio-Technica, and Sennheiser packages. As far as what to expect for sound clarity, vocals will sound good, guitar ehh, and kick, snare, hat ehh. You get what you pay for. The higher end custom fit stuff might be the way for you to go...
Hope this demonstrates their system a little clearer… I’ve used their fasteners, they do the job and easy to switch things out. I still prefer dual lock.