When comparing ii vs KVIrc, the Slant community recommends KVIrc for most people. In the question“What are the best IRC clients for UNIX-like systems?” KVIrc is ranked 7th while ii is ranked 9th. The most important reason people chose KVIrc is:
Help files and online resources show all of the feature and scripting capabilities.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Everything is a file
ii is a minimalist FIFO and filesystem-based IRC client. It creates an irc directory tree with server, channel and nick name directories. In every directory a FIFO in file and a normal out file is created.
The in file is used to communicate with the servers and the out files contain the server messages. For every channel and every nick name there are related in and out files created. This allows IRC communication from command line and adheres to the Unix philosophy.
Pro Extensive documentation available
Help files and online resources show all of the feature and scripting capabilities.
Pro Portable
KVIrc does not need to be installed. It can be kept on a flash drive and run from there.
Pro Still active developement
Despite whats been said, development has been continuing at a steady pace on version 4.3.1 and more recently 4.3.2.