I've tried getting a Raspberry Pi with Anker, Raspberry with Satechi, Raspberry with DLink, and still, the best results for a multi-asic setup is still my Mac with Ankers...you can daisy chain up to a hundred on each usb connection and mine away.

One irritation with running Satechi on any device (e.g. Pi), is they are very unstable - and flop over at the slightest disturbance - so the only way to I found to work around this is to have two arctic breeze's, and hang them off each side of the device.

With Pi and Satechi, i could get up to 5 Erupters working at low error rates, but soon as I went 6 or higher, my pool stats dropped way off and the error rates started going ballistic.