The Galaxy Note 8 is still an absolute workhorse of a phone a year on from its release. You can get more done with the S Pen, and really the only limitations you'll face will be battery life and internal storage. If you've used up the 64GB of base internal storage on the Note 8, you should invest in a quality microSD card and add up to 256GB of additional storage. The best part is the prices for microSD cards are getting better and better!
Straight from Samsung
Samsung microSD EVO+ 256GB
Using Samsung's own microSD card offerings might make sense if you're a huge Samsung fan, and it also helps that they're some of the best you can buy. Go all out with the 256GB card for a breezy $92. With read speeds up to 95MB/s and write speeds up to 90MB/s, you'll be able to record HD video straight to the card.
200GB for less
SanDisk Ultra 200GB microSDXC Card
With read speeds up to 100MB/s and write speeds up to 90MB/s, this 200GB card from SanDisk will let you able to record in HD or 4K to your heart's content. There are several microSD card options available — from 8GB all the way up to 400GB — but the 200GB card is your best value here.
Best value
Kingston Canvas Select 128GB microSDHC Card
This Class 10, UHS-I microSDXC card from Kingston features a 64GB capacity and advertises a read speed of 80MB/s and write speed of 40MB/s. Not quite as fast as others on this list, but with the SD adapter you'll be able to easily load up all your favorite media for your phone.
Which microSD card you go with will depend heavily on your budget and whether you plan on loading the card up with your favorite media, or use it to expand your phone's storage for photos and video. Our recommendation would be the ($92) which should satisfy even the most storage hungry users.
Updated September 2018: This article has been updated with new pricing and model information. These are the best prices we've seen in a long while!