It does not matter which bikes you get - the most important thing is that you and your family feel comfortable with the shop. You have to trust them to provide solid advice. With your family; visit EVERY bike shop within a reasonable distance. Decide which two are the best for your family - should be a family discussion. Then visit those two again, ask for recommendations, test ride; go home list all the pro's and con's, then go purchase.
Purchasing on initial cost is a very bad idea; total cost of ownership is what you need to compare.