So far not a fan of the Avalon 1246's.

The hash rate, irrespective of pool is much lowered compared to what it is supposed to do.  On my 85THs, it gets a max of 80, usually running lower.  The 83THS gets high 70's and close to 80.  1 machine keeps rebooting every 36-48 hours, and can't seem o find the issue.  Machines were new, and been mining only a few months.

The S19 110's have been performing well and above the advertised rate, and been sound since day 1.