68pete,
At the moment, I only have Q45-T at both ends of speaker cables (by wiping off clean the MS-E ) and the rest of system still treated with 1260. I can not recommend either way as you listed because I have not gotten there yet but base on the result that I’m getting from Q45-T, I think I would, likely, first, wipe off the 1260 at males connectors like AC connectors, interconnects, using napkins, dry cotton towel and Q-tips. The female parts from AC receptacles, cords and IC’s will be last as they are more challenging to wipe off and Rick recommends some bottle cleaners that I have not tried or looked into.
https://vetco.net/products/mg-isopropyl-alcohol-aerosol-spray-16oz
Q45-T pricing as below:
$349 for 5mL
$599 for 10mL
Thanks for reading