Based on your needs and desires, it sounds like a good purchase to me then. Those are good regulators.Initially went to the store just to get the Aeris reg serviced, was not expecting to get a new regulator that day. I hadn't really done any research on regulators at that point. Shop owner said Aeris service parts wouldn't be available and offered me a $50 credit to trade it in. I looked at the MK 11 and c370 as well. My friend who I was with at the store is a dive Master and teaches locally, her school uses the mk17/g260 so I went with that. After leaving the store and going to research about regs online, I called the shop owner and asked if the mk25/620ti combo would be a good upgrade and he recommended mk19 evo/d420 would be a worthwhile upgrade in functionality and breathing ability, so I went with his suggestion. So I wouldn't say I was upsold as much as I was thinking, I'm going to have this a long time and wanted something on the higher end of reliability. The information I got here on this thread has been really helpful, thank you all so much.