Hehe, can't argue with ya there! It's a great game, onto a New Game+ myself. =P

But uh... I dunno, I'd say it's "easiest" to get to the archydra (in travel time terms) once you've gotten to the part of the game with it, but otherwise, it looks just the same as a hydra, just different colors, so the 1st or second hydra encounter could suffice for the vore portions if that's all you want. ^_^;