When looking for a travel system I looked at the Quinny Buzz Speedi SX and others. In my opinion this is the best on the market. It is quite chunky and retains the pneumatic wheels which I really love as they are much smoother. The best feature is the soft carry cot which fits easily onto the lie flat seat unit and cost about half as much as the others. The folding mechanism takes a bit of getting use to but in the compact mode it is pretty small - even with the big wheels
If you are considering the buzz or any off road travel system you should take a look at the Mura. It is cheaper and takes all the best features from other models.
I would recommend this travel system over and over again.