I am a very new knitter (only 2 months) but I found this yarn to be very soft and easy to knit up.
Purl Essence by Rainbow Classics. It's 100% acrylic, very soft, listed as a "bulky 5". Of course, the needle size you choose will make a difference. I tend to use a smaller size than suggested, so it's nice and "spring-y"
Hope this helps.