If compactness is a priority, what are your thoughts on the Scubapro MK11 EVO? Compared to the MK17 EVO2?
I suffer from no neck bang the back of the head syndrome. When it's time for a new set, I may look at one of the more compact models.
Honestly, I don't want the enviro seal for cold water, I want it to keep out muck and sand, and to be a bit more forgiving if I don't rinse it out perfectly after a salty dive.
And I already picked up an MK11 from Mr. Lex to use as a backup (thank you, sir). Just want something sealed (but still compact and lightweight) for my daily driver.
I also looked pretty seriously into: Hollis DC7, Dive Rite FT1, Mares 62x, and HOG D2, however they all failed to meet at least one criteria out of: quality complaints, weight, hose routing, or unacceptable failure modes. I really like that Dive Rite and HOG sell parts direct to customers, but both of those regs are much heavier, and the FT1 port configuration requires adding a transmitter hose. Not sure I want to be FORCED into doing that. The Cressi MC9 is actually creeping in as a budget contender...but mostly just because part of me wants to rebel against SP's business practices. AL Helix Compact Pro was previously a top contender, but my local LDS says as much as they would like to sell me one, they have no idea if they would be able to service it when I brought it back in a year. I really wish Deep 6 would make a <600g Signature-quality reg, but I don't think that's in the cards.
The F8/F8 and MK17E2/G260 seem to be good candidates for best all-around AOW regs. Hoping someone can share some service manuals so I can take a peak inside them....