I think Konversation is easily the best IRC client on Linux and possibly all of Computing. The Context-Aware Tab Completion is incredibly useful and should probably be stolen by all other IRC clients.
am missing Limechat sooo much :-(
The best GUI based IRC client for KDE. Quassel is just a complete mess ATM.
This is a pretty decent irc client for using while in kde. Very little to be overwhelmed or confused with, but neither lacking in features.