yeah you can get 6 months for free here:
Amazon Student
That card is good but you're looking for a MicroSDXC and not a standard SDXC
The Samsung Evo would be the best value for the money, good speed and price. The samsung Pro would be good if you'll be throwing it on another device like a GoPro4 as it's capable of 90MB/s read and 80MB/s write.
SanDisk Ultra 64GB MicroSDXC 48MB/s Read, 15MB/s* write (*the write speed is based off of the previous iteration of the card)
Samsung Evo 64GB MicroSDXC 48MB/s Read, 32MB/s Write *approximately
Samsung Pro 64GB MicroSDXC 90MB/s Read, 80MB/s Write
SanDisk Ultra 128GB MicroSDXC 48MB/s Read, 15MB/s* write (* based upon previous iteration)
Lexar 633x 128GB MicroSDXC 95MB/s Read, 25MB/s Write* (*based upon the similar U1 16GB card as it should have slower writes than the 32GB/64GB version)