Airtight ATC 1 v. Airtight ATC 5

[DaveH]

I just purchased an Airtight ATC 1 and love it. An ATC 5 is available for a seemingly reasonable price, and I'm wondering if anyone has heard both and, if so, how measurable the (presumed) jump in SQ is, and what in particular the ATC 5 does better (or worse) than the ATC 1.

Thanks!