I've just got the phil and teds sport.
ive only used it a few times, but so far i love it. really easy to push and so easy to fold down and up.
the only issue i have with is if the toddler is in the back seat and it's reclined slightly, i can knock my knees on the back of the seat, but that may be part of the fact that im walking slightly different with a bump.
also, if the toddler is in the back seat it's possible for them to put their fingers around the wheel guard and actually onto the wheel. mine hasn't done it (hes only been in the back seat once) but around work ive seen kids who have been doing it.
i love how easy it is the fold, the fact that it is just the same dimensions as a single buggy and it is easy to push.