Plague and molten cannot be dodged, neither can arcane. It isn't as simple as elemental or not though. For some reason frozen and fire chains can be dodged. Desecrate cannot, mortar can, etc. In any case armor is much more reliable than dodge, but in my dual wield build I use both, and rely on LoH instead of transcendence for healing. You can get 700 dps weapons with 600 LoH for like 100k gold these days, so I'm not sure transcendence is needed much unless you're doing a build focused on it (stacking life on spirit spent items, and using a spirit on crit generator).