I'd say that those PSUs are an unknown quantity at this point - too new on the market. I would say they are probably better built (more expensively) than the equivalent in the Sparkle budget line or Athenatech would probably put them in their cases. But they use the ATX-123GU series from Sparkle and an even cheaper one from another mfr instead in most of their cases.
.bh.
p.s. Those Athena PSUs may actually be made by a PSU maker with a better-known rep. Look up the UL file number (e.g. E123456), if there is one, to find out. If there is no UL/RU mark and no file no., then that would be reason enough for me to stay away.bh.
. Looks like there are at least two mfrs that actually make the Athena PSUs. One appears to be JGE (never heard of). The UL file numbers in the pix I've seen are too small to read and too fuzzy to read when enlarged.