We are looking at travel systems (Jane slalom reverse to be specific) and I know that you aren't supposed to have newborns in car seats for extended periods but when is it ok for them to lay in the pushchair bit?
Is it necessary to spend extra money buying the carrycot part?
I would get the carrycot as it'll make your life much easier. It will permit you to get around with your LO even asleep instead of having to make him up to get out of the car to go home or in the supermarket... or to wait in the car.
It always seemed fine to me. The only consideration I found was as it was that bit bigger was make sure you try the seat in you car in it's upright position to check the belt is long enough. Oh and I would suggest an addtional head support (Sunshine kids do a dual layerd one) when they are really small. I believe there have been quite a few improvements with this travel system recently and would centainly consider the lates model if we are lucky enough to have a third baby!
I had a Carrycot for my quinny buzz and although the buzz itself was a bit of a PITA the carrycot was great. DS slept in it, he wasn't in the carseat for hours on end, it had a zip on mozzie net for camping etc. However he outgrew it by about ten weeks!
I would advise buying one secondhand if you can - mine was about £35 as opposed to about £120 new. Definitely don't think I would have had £120 worth of use out of it!