Best vacuum cleaner for hardwood and carpets?

What is the best reasonably priced vacuum cleaner (under $200) that works on both hardwood floors and carpet?

Answers:
i asked my sister (who just moved to boston) this same question about a month ago and she recommended i buy her vacuum, which i did, and it works awesome! here's a link my mom is screaming at me to clean my room before my friends sleep over. i can barly see the floor! what do?

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