WotLK icecrown server

[deity]

Hello, I want to start playing on Icecrown server, my friend already has a character there. I know I need to download wotlk client but I found two of those on download page: Wotlk and wotlk (old), I am a bit confused which one shall I download?

[Skuddy]

wotlk (old) uses normal wotlk models. the other uses wod models which are buggy and can cause crashes.