In the Ranger Bowing thread, I stated how generally low dps an autofire Ranger will be, especially versus a similar to box Magician.
I personally like Clr + War for boxing raid encounters, but of course, it depends on the encounter. But for most, that is a better pick, unless there's the need for FD pulling, or the more universal cure tool of Shaman's Pure Spirit, or the need for slow. Also it depends on level of players versus the encounter. In general though, the SK offers alot more versatility, as does the Shaman. Alot of my SK friends like Clr boxes better than Shm as well, due to the better healing. But for group, Clr merc will do fine, and Tank mercs are pretty powerful tanks, just both not real bright.
Edited, Jan 23rd 2013 4:03pm by Yther