I just spent the weekend dragging my old Litecoin miners out of storage, dusting them off and blowing them up (three no-shows, one PSU self-destruct and some old 7970s that are going to need disassembly to get the dust out. Dust and moisture; the two computer killers. But I digress.
I got a quad AMD rig going with 3 R9 290s (old style, single blower). I coughed up some BTC and purchased a bespoke Linux distro called EthOS, and am running Claymore for ZCash (lots of other options available). Currently getting 940 H/s at the rig, 910 H/s at the Pool (we are not served well in Oz, latencies of over 300ms in all directions). The Pool costs 1%, Claymore takes a share too, but you pay for convenience, and I spent weeks getting my LTC rigs halfway right.
Some fun and games unpacking the distro to an SSD, but it seems to do what it says on the tin, and provides a web summary, ability to program multiple rigs, remote headless control et al.
They are making a fearful amount of noise and generating peanuts, but as the rig is running on solar during daylight hours and used four-year-old kit in a box I am cautiously pleased. Next step is to refurbish one of the 2kW rigs with the R9 280Xs I have lying around...