I have an October batch (6 port) Kncminer Jupiter and have been mining for 6+ weeks now. 

It has the Low voltage problem, so I'm getting on average 525gh instead of 550-560 provided I keep each ASIC within its preferred temperature range.   

I'd like to upgrade my machine, but wondered what I should be asking for it.  I'm based in Canada, happy to do escrow/ship or meet in person. 

I would post this in the general or classified section, but as a new forum member I can only post here. 

Any thoughts / idea?