Although I'm too sensitive to wear it I adore Plymouth Encore. The colors are beautiful and many and I like knitting with it. I use a lot for charity projects that don't require wool.
I made myself a sweater with James C Brett Marble Chunky and I love it! It's a little fuzzy, but it was easy to knit with and it's pretty.
I never noticed squeaking with acrylic. I think it must be the way some people knit or possibly a different needle type. Anyway, I like Carons Simply Soft and Red Heart SOFT (not super saver..hate that stuff).
I like a lot of wools, but I just can't wear them.