I've only read one SW book and it made such an impression on me that I cannot remember which one, nor remember anything about it, and swore off reading that tripe until hell freezes over.
ST books are far superior.
There are Star Trek books that could have had the same effect on me if I weren't already addicted. There are some really, incredibly bad Star Trek books out there.
I read Star Trek instead of Star Wars because Star Trek interests me a lot more than Star Wars: the setting, the characters, the situations, all that stuff. I've read a dozen or two Star Wars novels and on average I liked them less than Trek books, but that's to be expected because in general Star Wars is less appealing to me. (Star Wars has better video games, though.)