tough rear cassette suggestions?

battery

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Joined
Dec 2, 2013
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195
Location
new york
I have been using the 11-34t Shimano mega drive rear cassette. It lasts me about 40 miles. This is a disappointment. I'd rather pay more than have to change it so often. Anyone got any suggestions as to the toughest 8sp cassette out there?
 
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