I am going to be making a baby blanket and matinee jacket, both in crochet.
I have had some excellent suggestions already for patterns, thanks again to those who replied on my other post, and for yarn, as follows:
Sirdar Baby Bamboo
Rowan
Debbie Bliss Cashmerino
Rowan Amy Butler Belle.
I would like an "heirloom" type yarn (ie something really nice), that washes well, ideally in a machine if necessary but handwash at least, and most importantly, has good drape.
I am halfway through a granny stripe blanket in Artesano Merino which looks great but seems a bit stiff. I am planning on doing a bobble crochet blanket for the "heirloom" and I think that's more drapey pattern than a granny stripe, but does anyone have experience of the above yarns? Can anyone advise which out of the above is the softest or drapiest when made up?
The Amy Butler has some lovely colours but are cotton/cotton mixes a bit stiff/no snuggly?
So many lovely yarns to choose from! Any comments gratefully received as I don't mind spending ££ on yarn for something really special but it's disappointing when it goes stiffer and stiffer as you're making it!!!
Would I be better off looking for a 4-ply or will it be just as stiff, crocheted on smaller hook, as a DK is? 
Thanks 