Right now, Amazon has a pretty good deal on the 128GB microSD card from SanDisk which they announced earlier this year. It's got plenty of storage and the best thing is that the Samsung Galaxy S5 and HTC One (M8) support the new microSD cards, and the LG G3 will as well when that becomes available. It features Up To 30MB/s Read Speed, 10-Year Warranty, Easily Back Up Files With "SanDisk Memory Zone" App, Compatible For Android Smartphones & Tablets, Class 10 Performance For Full HD Video, it also Includes SD Adapter so you can use it in a camera. It's usual price is around $129, so it's not a huge price drop but it's also been out of stock for quite some time. So nice to see it back and a bit cheaper as well.