As we highlighted yesterday, a bunch of Google gadgets are currently on sale, likely in celebration of the tech giant’s upcoming anniversary. Chief among these is the Pixel Tablet, which is down to $439 ($60 off) for the first time. However, although it’s a good tablet, it may not be the best option if you use your tablet largely for reading or aren’t heavily invested in Google’s ecosystem. Instead, you might want to take a look at Apple’s latest iPad Mini, which is on sale at…