I have the graco quattro deluxe - which is the exact same pram, just different badges on.
i LOVE it! However, it is, as mentioned, big and bulky, its fairly wide, and only just fits into the boot of my golf, i leave it in my boot, but i wouldnt fancy having to carry it anywhere!
But, the reason i love it is because it is bulky! - or more specifically, because it can take some stick! It is really light to push, really easy to fold down, and really easy to move from lay flat to upright when using as a push chair.
while on maternity i walked at least 1.5 hours a day, whether that be on pavements, or on tracks round lakes etc, and it was great.
I went out one day with a friend who had a quinny (not sure which one) I pushed her baby and it was soooooooooooooo light, which was great, but it also meant that it was impossible to push uphill, as it kept tipping (baby was in the car seat on a chasis) and it was not possible to stop if you were on even a slight incline. and as it was made to be light and small, there was no where to even hang your changing bag - (i put mine over the handles) there was also no basket on the bottom, which on the graco i find invaluable! I then decided i liked my big and bulky travelsystem!
As previously stated, we didnt use the carrycot part for long (about 6 weeks) from then on we used the car seat on the pushchair (rear facing) but from 3.5 months old, Reuben went in it as a pushchair as he loved to look out, i think there is plenty of space though when put facing forward.
HTH a litte!