We had the travel system too and like you, it just got to be too much. Plenty of room to carry it in the van, but still too much.
So, we bought a cheap umbrella stroller at a consignment sale. I HATED it. It was too low to the ground for me to push comfortably (and I'm only 5' tall) and had no way to store anything.
So, recently, at another consignment sale, we bought this one (http://coscojuvenile.djgusa.com/en/djgusa/cosco-juvenile/.... Much better! It has a basket for my purse and any other small bags, I can attach the diaper bag to the handle and store my keys and phone in the little mesh basket. We also use our wagon for some things, like if we're going for a long walk or something.