Having four school-age children who all play basketball, my husband and I spend a lot of time spectating from very uncomfortable school gym bleachers. We tried out our new stadium seats yesterday and were extremely impressed.  We both had but one question..."What the heck took us so long."  They may seem a bit expensive, but in my opinion, worth every penny. 

Pros: Easy fold/unfold, backpack straps make transporting hands free
Cons: A bit bulky, but manageable