Wanted to specify power is not an issue since that's the deciding factor for 90% of the mining industry it seems. Thanks for the answer though!
The clarification doesn't make a difference, the 5 aforementioned threads and the many before all cover the information you would need. Seeing as this is in the Bitcoin forum I will give you a small amount of info then please run wild through the threads soaking up what you can.
1) Avalon 741- Reliable, good customer service, decent service/response times for defective or damaged units
2) Bitmain s9 - Most efficient, higher in field failure rate, long frustrating expensive process for repairs under warranty( I've heard, no personal experience)
3) Ebit E9- somewhere in the middle, I stopped looking into them early as I knew they weren't for me, but I think they are currently the easiest to buy and get in hand.
Check the threads regarding all these units.
For alt coin machines go to that part of the forum