24% Movespeed is mandatory in pub games/ group play. If you have 0 or 12% MS and if there is 1 or 2 guys with 24% Movespeed and good gear, you will be useless the whole game, leeching behind, doing 0 damage because most mob will be killed or almost killed before you reach them.
Dext classes have no excuses and should always have 24% with Inna Temperance. For the others, when they already have good EHP without pants, adding 90-100 dext is not bad at all and the IAS can help (or break) some builds a lot...
Wizards really need 24% with archon, CM/freeze specs can go with 0 or 12% but as they need a lot of attack speed they will probably have 24% anyway
WD like movement speed to get in range of things for their passives but attack speed can really be toxic to them
For Barbs, move speed is great (more tornadoes, perma wotb), they already have high base EHP so it's never a big sacrifice to go inna or lacuni, and attack speed is one of their best affix for almost every build (except Rend)
This post was edited by bouzigue on Jun 21 2013 11:59pm