I think there is always risks associated, with both co and cot sleeping. You have to weigh up the risks and benefits, dependant on your own circumstances. Iknow for me personally, the risks associated with SIDS and co-sleeping with DD were far outwieghed by the very really risk of developing severe PND, exasperated by sleep deprivation (we get more sleep in bed together. I don't handle sleep dep very well and had PND bordering on pyshcosis after ds was born, made much worse by getting up out of bed every hour and a half for the first six months of his life).

Just like any other issue, it is incredibly valuable to know all the info and all your options. You put what you know with what you need, and do what you think is right.