My own experience : several sets of Atomics, then a Legend, then an Apeks.
I now own / dive an Apeks & a Legend LX ( ACD ), and would not have an Atomic as my primary reg.
Care to elaborate?
I'm curious what made you feel so strongly about the Atomics after just a few dives with them. (rentals?)
I used to dive with what's essentially an Aqualung Titan for a 100 dives, switched to Atomic, did another few hundred dives with a number of Atomics (still have and use them all), while using an Apeks ATX200 for a couple dozen of the dives, also routinely breathed off of my buddy's Apeks long hose, and I found that while all of them were great regulators, the Atomics breathed better. I also had a Scubapro MK20/S600 for a few dozen dives on a deco bottle and that was comparably good, but I sold that one in the end for logistical reasons.