We are from Pittsburgh too

! What part are you from?
A lot of it depends on what you are looking to do. If you want to relax, Lake Erie and Deep Creek are both great suggestions. We have done both and have another week this summer planned at deep creek, great family fun.
We went to Hersheypark last summer. We loved it. Rented a house for a very reasonable amount and spent 3 days in the park. We also did the chocolate factory. My kids were 7 and 5 and loved it. In fact, they have talked more about Hershey than our last Disney trip.
Sesame Place is also an adorable park. We did that the year before. Kids 4 and 6. My 6 year old still had plenty to do. Huge water park, great parades and character interactions.
The Columbus Zoo and water park we did the same year as Sesame Place. It's the best zoo I've been too and the water park is huge! Another great option.
Good luck!