Ermm, I started off really hating it, but overall I think AS was just about okay - it all depends on what texts you do really, I think. (We did good texts, OCR, which I think is a major part of why I liked it....) If you get a lot of essays like we did that sort of puts a downer on it.
If you like any of the texts originally, be prepared to hate them in the end after you've analysed all the fun out of it