[Milhouse]

Do you have any recommendations for a good wifi dongle for the pi3? 

The official Raspberry Pi WiFi adapter and slightly more expensive WiPi adapter have good in-kernel driver support (based on BCM43143), the only possible downside is that they're both 2.4Ghz only (and sold out at the first link I could find!)

The problem with making recommendations particularly with the cheap WiFi dongles is that it's difficult to know what chipset any particular product is using this week - some dongles have been known to change chipset mid-production without changing the model number, and the new chipset may not work as well (or at all) as the old chipset.

This RPi wiki page has details about various dongles and adapters that work with Raspbian, but as a rule of thumb I'd just avoid anything based on Realtek.