hi. has anyone bought a bugaboo cameleon3 (3rd generation)? i have seen some with 3 wheels and some with 4 wheels. why is it so? which one to go for? also, where can i buy just the stroller (i mean just the complete seat)? i don't need the carrycot etc. as my son's nine months old now. i know these are expensive. anywhere i could get a good deal? please advise. thanks.