Top positive review
Great value from Pioneer, no complaints as of yet
October 16, 2019
I am writing this review when the Pioneer 128Gb X 2 Micro SD card w/ adapter pack is around $25 with Free Prime shipping. I wanted the 2 pack as I put one in my Nintendo Switch and one in my Samsung Galaxy S9+ phone and I could not find a better price for 256Gb total (128x2) that wasn't poorly reviewed. Though this did not yet have a review, I have used Pioneer products before and have been generally satisfied (and the other Pioneer SD cards seemed to have good reviews).
Both my S9+ and my Nintendo Switch immediately read both of their SD Cards and are showing the correct storage space. I immediately downloaded a game to my Switch and it is working just fine, no noticeable slow down in loading times that I can tell. I also put a .mp4 movie file onto my S9+ and used the app MXPlayer for viewing it; the file played perfectly, no slow down or stutter.
Both Micro SD cards came with a plastic snap case that also contains a Micro SD Adapter for both which is great to get, considering I have so many old SD cards just laying around without cases. So far I am very happy with this purchase, especially considering the price. I will update in the future if my cards suddenly die within a few weeks or months. So far this is an easy 5 star product if it can withstand some use.
Edit: 1/16/2020: Today is exactly 3 months and both cards are still going strong after undergoing a lot of use.