Yes, you should get both. Oddly enough, especially WC4 contains some interesting bits and pieces about the Kilrathi. And yes, you will not like the decisions Blair makes, especially in WC4 - but they're still worth getting and going through.Now I'm thinking about whether I should buy the WC3 and WC4 novelizations.... I fear that I might not like the canonical decisions and achievements of Blair and thus... I don't know... kill the immersion in the games maybe? Because I think Blair is a dumbass or something.
So what do you think? Should I try to get those? Do they have content which could be really important for me or something?