15X70's are a great way to go! My Skymasters are in no way the equal of your AP's, but I enjoy them greatly. An added plus, is at this size/mag, mounting is optional (depending which type of observing you have in mind). Pan from north of Deneb all the way through Sagittarius, and you'll know what I mean. that's where my 15X70's got the moniker "Droolmeisters".