I have some experience with BBB's and recently got a F8-B from dkulp, it's great!
It looks like the F8-PB is a bit more "optimized" in that it's smaller and the pocketbeagle is certainly cheaper than a full BBB. Having never used a pocketbeagle before though, I'm curious practically what everyone is doing to connect the PB up to your network. Is the USB port really the only option? I've never been a fan of USB-ethernet or USB-wifi for a device's "main" connectivity when it has to go in an enclosure in particular.
I'm sure with careful choice of a USB-network dongle the performance is fine (particularly in multisync rather than bridge). What USB-wifi or -ethernet hardware have people had best luck with?