just in case anyone is still interrested i pushed my ultralight with my small 11 year old in back [about the size of a 9 year old] she had no head room although i did put the hood over her head and 2.5 year old in front very do able but heavy, put 5 year old in front with 2 year old in back felt like front wheels were locked when trying to turn very heavy, but with weight of my eldest in back and five year old in front it was better, i would not want to push any heavier than a five year old in the front [he is small about a 4 year old], the shopping basket is difficult to get to on the caboose ultralight as the seat only slides a bit, i struggled to get a packup bag and bookbags in through the sides, but you can hang loads off the handlebar just have to have it hanging off to the side as it could swing and bang the child in the back. on lifting them both into the house the ergo is a lot heavier than the ultralight so not one to take on public transport where you may have to fold, the ergo is also alot longer more like pushing a tandem, so will be more difficult than the ultralight with a heavy child in the front and the wheels are single at the front although i only go over grass so fine, the basket is huge and very easy to get to even without lifting the seat up, you can also leave the seat semi up if you have alot of shoping and child can still stand on the back, the back hood/sunshade is removeable it just unzips away from the hood my ds did not like it as he could not see my face. both are can be heavy to push depends on what weight is init, you can not compare either of them to pushing say a bugaboo, but they are nice to push, the handle on the ultralight is very up right on the ergo it is not so upright, they are built well, my ultralight has had 3 kids on it and still going strong, i will measure the ultralight with hood and snack tray off and let you know