Or... use your highly geared DPS to blow through content with your tank and healer (i.e., get both geared first)? Might work in the "easier" boxing dungeons like Gundrak, Nexus, etc. I know my average boss fight wtih my team of DPS is in the <30 sec range. Pretty hard to lose a tank in that time. Just spam your big heals and you won't go OOM.

Just an alternative.