LEEWS is pretty much universally lauded, so it's a no brainer to me...what's a little over a hundred bucks compared to the metric tons of money spent on tuition?
I've always argued this, but it's fallen on deaf ears.
Legal writing is about short, concise, on point sentences. People who call themselves "good writers" normally construct 25-35 word sentences with a lot of fluff and ambigious terms. In legal writing, every word must count. You'll quickly learn that legal writing is more difficult than the long winded prose your English teacher loved. The complex, huge word, ambiguous language is not how you effectively communicate an idea; it's often how you confuse people and keep them from figuring out what you actually know (or don't know, as is often the case).
An interesting exercise is the following... Tell someone "Spot, whom I like very much and likes to run, is a good dog, is happy, and he likes food." Ask them to name the first thing that they learned about Spot. Hardly anyone will say "likes to run." Then say, "Spot likes to run. I really like him. He's a good dog. He's very happy, and he likes food." Not only will most people be able to tell you the first thing, they'll be able to tell you all four things and isolate your liking of Spot as irrelevant to the question. It looks like 2nd grade writing, but guess what? It communicated the ideas more persuasively and effectively than the typical "good writing."