I'm planning a ride across the states and I'm undecided whether to buy the adventure cycling maps. They do seem very expensive to me.

Can anyone recommend them?
What are the benefits these have over other standard maps?
Are the routes they detail very overcrowded with cyclists?
Any other pros or cons?


I'm just trying to justify spending the extra for these maps so any feedback is appreciated.

p.s. maybe there should be a thread somewhere for cyclists to exchange or re sell these maps