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When I'm recording a video at 1920x1080p (60 fps), the bit rate is at 50 (mb/s). So, should I buy the Sandisk Extreme Plus (80 mb/s read, 50 mb/s write) or the Sandisk Extreme Pro (95 mb/s read, 90 mb/s write)?
 

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Welcome to the forum!

Don't mix mega bit with mega bytes. The camera is recording at 50 megabits (Mb) and the cards are rated in megabytes (MB). There are 8 bits in a byte. Look in your manual for whatever camera you have. It will probably say you need Class 3 (maybe Class 4) or higher.

It seems that regardless of what our instructions tell us, the standard for 1920x1080 has become Class 10. That's partly due to availability and pricing. Any Class 10 will be about 3 times faster than the camera needs if you do the bits and bytes math.
 

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Don't mix mega bit with mega bytes.
Tyson lee, also do not confuse mega ("M" = 10^6) with milli ("m" = 10^-3). Case is not important for some SI prefixes like "K" but important for other like "M" and "m". I doubt that your camera records at 50 mb/s.
 
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