I love acrylic; I love superwash wool; I love anything that is smooth and easy to care for!
When I was actively crocheting many many years ago, my favorite yarn was Red Heart Super Saver. Apparently, this is an evil yarn and I have horrible taste!
I learned how to knit on Cascade 220 Superwash, so I can see where the acrylic doesn't "feel" as nice, but I still love how easy it is to work with and how well the stitches show up against it.
I'm sure other (more expensive) acrylic yarns are a dream to knit/crochet, but I still have a large stash of Super Saver to work through and I think I'll quite happy with it until it is all gone.
My only problem with it right now is that I don't know what I was thinking when I bought some of those colors!