You may want to check out
www.leeindustries.com
My dad is a rep for their furniture. I have many pieces from them, they are durable and BEAUTIFUL!!! They have a FAQ section that talks about cleaning leather and durability.
Also, since you have kids, they make machine washable slip covers for their furniture AND they have an awsome new line of water proof "kid proof" fabric that is WONDERFUL! My slip cover has been peed on by my dog, thrown up on by my daughter and had more things spilt on it then I can keep track of and it still looks beautiful! The couch underneath the slip cover still looks beautiful too! I had a sectional sofa from them (it died in Katrina R.I.P) that was 15 yeas old, very high grade fabric. Any spills, even after 15 years, would bead up and stay on the surface. It was a hand-me-down from my parents when I moved out, then was handed down to my sister, then back to me, then to my Uncle and it still looked brand new!!
Also, when looking for furniture, the higher the grade of fabric or leather, the more durable it will be. Good luck and most of all have fun!