I am 5'10" and my husband is 6'0". Believe me I have been there. After struggling with a lot of strollers, one had a sticky wheel, another was bulky we decided that we would invest in a good quality stroller.
We purchased a Maclaren Triumph (the volo has a sling back and triumph has support and two positions for the back). Part of the reason we chose Maclaren over Chicco was the weight limit. My six year old can still ride in the stroller, the limit is 55 lbs, I believe the Chicco was 35 lbs.
The Triumph is light weight and has a strap so I can carry it over my shoulder if I grab a kid and run through the rain. A Maclaren will cost at least $100, but they last forever, and they stand behind their products- a friend had hers replaced after years of use. Good luck.