Classical CD Box Sets

So I've just discovered Deutche Grammophone's Legendary Recordings, as well as a boxed set of them at Amazon, then I discovered Decca.

For around $100 what are some of the best classical sets you'd recommend?

I like classical, but my education extends only to one semester of it's history and meta-structure.

Should I try getting one of these sets, or should I look at something like "1,000 Albums to listen to before you die" as a guide?

Best,


Erik