I am now out of the area for 20 years. While 'Colonial Oaks' on the other side may have been more prestigious it also had more traffic in my day and to me had the aura of an older community. The only advantage I found on the other side of 18 was the library was within that area. In my neighborhood, when cars were lacking I could walk up to Route 18 even with a baby stroller with no issue, and we were more centrally located to the mall, Pathmark, etc. Commuting was not an issue because at that time we had local buses from the city coming down Route 18 and I walked home from my commute many times. We also had an advantage in getting to the Garden State Parkway or going southbound to the shore. We lived there before children as well and enjoyed all the restaurants, shopping to both north and south, and other things that young couples do.
We are a very mobile society (moving I believe every five to seven years) so neighbors and friends will come and go in your life. My children went to Chittick, Warnsdorfer, and Hamarskjold and the quality of the education was very good.
The builder constructed homes of very high quality; streets, curbing, storm and sanitary sewers were all included. Many of the original oak trees were preserved as well as streetside plantings of maples.
I lived in Rambling Hills and loved every day of it.