In your Amazon link, the top result is a "MyDigitalSSD 128GB (120GB) SSD" for $60. They list the speeds as:
- Write speed up to 545 MB/sec
- Read speed up to 430 MB/sec

Now, here's a "Transcend 128GB UHS 3 SD card" for about $70. They lists speeds as:
- Write speed up to 95MB/s
- Read speed up to 60MB/s

Do not use Super Cache drives as a boot drive

those drives are designed to be used as cache drives, not boot drives; as such data integrity is not guaranteed on the cache drives

Use this instead:

MyDigitalSSD Super Boot Eco (128 GB): https://www.amazon.com/MyDigitalSSD-128GB-120GB-Super-Drive/dp/B00LNF1RVM/ref=sr_1_1?ie=UTF8&qid=1475532465&sr=8-1&keywords=mydigitalssd+128+gb