Yes. The most important thing is reliability. What's the use of a high hashing rate machine and its unreliable and breaks now and then??? Wasting your time with shipping back and forth as well as wasting time till the machine is fixed?

Hope they fixed S9 and R4 with their T9.

Only time will tell.

For now Avalon products are reliable and this is the main concern then hash rate and effeciency.