Best camera for under $200?

I am being paid for teaching a technology class at my school with a piece of technology under $200. I would love a Canon or Nikon. I have found several different cameras, but I don't know which are best. I am welcome to any suggestions. These are a few of the cameras I've found. Which one is best?

http://m.target.com/p/nikon-coolpix-l330-20-2mp-digital-camera-with-26x-optical-zoom-black/-/A-16448066?ref=tgt_adv_XSG10001&AFID=google_pla_df&LNM=16448066&CPNG=Electronics&kpid=16448066&LID=10pgs&ci_src=17588969&ci_sku=16448066&kpid=16448066&gclid=Cj0KEQjw-OCqBRDXmIWvveLE3_cBEiQAZWfImdcG4OC2bgnXLlFyoD3Ua1oRqBjWSkGI1T03vk5XTgUaAkqz8P8HAQ

http://shop.usa.canon.com/shop/en/catalog/powershot-sx510-hs-refurbished

http://www.amazon.com/Nikon-Coolpix-L330-Digital-Camera/dp/B00HQDBLDO

Thanks so much!

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