darlingme - I know what you mean about the bassinet attachments. I wanted the one that goes with my stroller, but it depends mostly on if you drive a lot or not. If you drive a lot, you'll typically be using the carseat with an adaptor, right? The carrycot is mainly useful if you go on lots of excursions from your house without driving.
For that reason (along with the cost, lol) I chose not to get my carrycot. It would probably only get used a handful of times if I'm being realistic.
They are only in the carrycot for a few months... they switch to the regular stroller seat at 3 months old.