I personally preferred the one which has white flowers that smell really good. I am not sure of the name in english but in my mother tongue it is called Mallepuvvulu. It doesn't possess any spikes though, check out this site if possible to find some good plants: http://www.hintsandthings.co.uk/garden/climbers.htm
http://www.gardens4you.co.uk/index.p...G5TFA&vmcchk=1