I agree mIRC is the best client out there. I too used to have to use a Mac with IRCle (also tried Snak, which I liked because it was most like mIRC) but yes, there was something missing.
Unfortunately, because Khaled is the only software developer of mIRC it's impossible to do all what he currently does and on top of that, port mIRC to another OS. I'm sure you understand this!
Regards,
