/chuckle

There are so damn many permutations based on what's happening at the time, your environment, your talents, group composition, opponents, your multibox hardware configuration and personal preference that this would be a waste of time. There are already tons of threads on here that describe the benefits and drawbacks to many commonly-used spells. The obvious ones are, well, obvious. The rest are situational. Seriously, do a google site: search on here for what you're thinking about and you'll probably get some good info.