Hi. I'm in the process of choosing either air conditioner and hope for your opinion on which I should go for. The 24ARC3 is the Comfort model that's using R-22. The 24ABA3 is the base model that's using R-410a. My inclination is to go with the Comfort since it is a bit quieter (74 vs 76 dBa)and slightly more efficient (not 100% positive). R-22 vs R-410a...from what I've read, R-22 will be around even beyond 2020. I would appreciate any input/words of wisdom. Thanks in advance.