Theres a guide floating around for making a 4 Blue Mage group and strategically taking turns blowing yourselves up(and using other skills) to finish Tam-Tara in less then 7 minutes. Syrcus takes about 15(and gets you two tomes instead of one), with LotA being a bit longer. WoD is fun, but the mechanics make it too slow for the payout. The other 4 1-tome dungeons are kinda a mess for the reasons Seraph mentioned, and i wouldnt touch either 3-tome run with an 11-foot pole.