https://lemmy.dbzer0.com/post/1239735 - my previous IRC write-up from 3 months ago.
Been using AdiIRC for about a week now and everything works as good or better than mIRC.
I do recommend a different color scheme thou. https://dev.adiirc.com/projects/adiirc/boards/6
Maybe more then a decade, I honestly can’t remember the last time I used it but dal.net was the big one back when I was using it.