Super fine, limp, soft hair

Where can I find a brand of hair that's very thin and limp?  I know, an odd request, but I want to match the texture of my hair more exactly.  I'm wearing fusion extensions with Asian hair now and I like them, but my biggest problem is that when I wear them down, they look fake because of the coarseness and stiffness of the hair compared to my own very soft, fine hair.

Oh, and I'm looking for wefts - I want to try an install with pro-tac, since you girls are all raving about it, before I go back to fusion...

lwray, have you ever used Bohyme silky straight? Its very fine and soft and is very straight.

Nope, never used Bohyme silky straight. 

I actually would like something (ideally) that has a little body/wave to it when it air dries, as mine does (it actually gets a little fluffy, although really fine and thin).  I straighten my hair but I'd like to not have to do it everyday.  I know there are people with stick straight limp hair, but that's not mine - it's just baby fine.

Thanks for your responses.  I'll look into those.  I could have sworn there was a thread on here earlier about someone's blond client who really liked some brand of very soft fine hair though!