I just got my DeepMap 600 and I am more than impressed with it.
If you are looking to observe more than just the Messier objects or the Herschel 400 then this is the map for you!
DeepMap 600 is more biased towards interesting galaxies and nebulae.
DM600 contains a list of 85 interesting double and multiple stars, and stars that exhibit interesting color..
DM600 contains a list of 22 interesting variable stars.

You can get yours here
DeepMap 600