My Big Bang Hero build

There really shouldn't be much dispute for 2nd job skills really. It's gonna be some wait but once the ultimate adventurer updates kicks in, soul driver would just completely replace both slash blast and ground smash being the only real decent mob skill for heroes (other than coma of course). The downside is yes, at max lvl you would only hit 5 targets rather than 6 but, 250% x4 skill dmg is more than enough to make up for just 1 missing target, its not that often that you even get to see huge mobs that number 6+ all in 1 spot usually anyways. You'd just end up tossing your sp into whatever you want basically. If anything, toss your 2nd job sp into maxing iron body if you didn't max it already.

http://www.youtube.com/watch?v=6EkYBm4a0...re=related
Not a very good video, but it looks to me like the dmg of 3rd job's coma is comparable to the dmg of soul driver (maybe even greater). 4th job may change some but I don't think people would want to recharge orbs in 4th that much.