Nothing against the book, but A Clockwork Orange was one of a very few instances where I have read the novel and seen the movie where the movie comes out way ahead. This isn't to denigrate Burgess, as the book is a very good read, but more a testament to what a fucking freak genius Kubrick is.
I actually specifically want to revisit the slang/slangworld in the book, so you see I have a rather specific reason to reread Clockwork specifically other than, you know, just story. I am reviewing a poetry book for Kenning where the author experiments with words/portmanteaus and it reminded me enough of Clockwork that I wanted to revisit it. I agree however, the movie is fantastic. I saw it long before I read the book and it does remain one of my favorites. Now I am thinking I should rewatch...
You should rewatch, for nothing other than the sake of watching a fantastic movie. As for the slang, it's really interesting to read that book and find that you're reading it with no problem after about 20-30 pages. We're more adaptable than we realize sometimes.