If its the graco quatrro in particular, i personally dont like it as i find its rather bulky and fills a boot completely... thats if it fits in ur boot at all!
I have had a graco excursion, that was ok, nothing fantatsic though.
Ive also had a graco mosaic, its ok, better because it goes into a pushchair so saves buying a new one...
Graco car saets, i found are quite small.....there great at first, but my sister ended up buying a new car seat sooner rather than later....
In my opinion gracos are ok..... but i have used all different prams since then, and personally i wouldnt go back, as ive been spoilt by features on better models....
If its the first pram you buy/use then you'll think there great, but if you start messing about with better makes and models, you'll hate them! lol