E.B.
Hello,
I'm not sure about the sit and stands, but I have another stroller by Baby Trend and it is terrible!! It is a walking stroller and the front wheel shakes the whole stoller as soon as I get moving at any speed, both of the back tires went flat in 6 months and the handles to colapse the stoller sticks all the time. So my only advice is find one that you can play with to see how it works before you buy.Good luck!!
E.