Hi Rob , I agree with everything said here and I will add this ,,,
,, Don't expect you or your girls to see much the first few times because it takes a little practice to learn how to look thru an eyepiece .
.
You have to learn how to position the eye in exactly the right spot to see whats in there , but don't worry it aint hard and gets easier the more you do it .
Grab the 10 inch , you and your girls will love it . Great choice .
Brian.