My understanding is the 7750 has been improved but it still a movement I'm wary of because its more challenging to find a watchmaker willing to work on one. So if I buy a 7750 and it dies, I might end up with a door stop.
Also, with "keeper" watches, if I have a 2824/2836 go bad, I'll consider having a gen Swiss ETA popped in. Thats not so cheap (or so easy) to do when replacing an Asian 7750. ETA 7750's often cost twice as much as an ETA 2836, adding the gearing mods is a pest - and might cause issues with the gen similar to the issues with an A7750. Theres really no "best value option" for these things, even if you throw a lot of money at them.
So what I tend to do is, if I find a chrono rep I want - and I believe I absolutely *must* have a 7750 versus a Quartz - I buy it off M2M from a member I trust. That way I get it a little cheaper, and someone else has done an extended QA on it for me. So far, this strat has worked (for me). I've got three 7750 based chronos, all purchased used off M2M (@ average 60% of original retail) and so far none of them have crapped out.
I'll add that I also have a handful of Seiko VX powered chronos and love them because they are super cheap, super reliable, and meet my one-yard on-a-moving-arm test of rep perfection.
These are my "general thoughts" about the 7750
Since you are a dealer, I'll add this...
If I was interested in buying a 7750 retail, something that would make one dealer stand out versus another would be the dealer putting extra time into the QC of a 7750. My impression is if you're going to have a serious problem with these it'll show up soon after delivery. So maybe the dealer could keep it prior to shipping a few extra days and put it through its paces. For example, do an initial Timegrapher, then wind it two days in a row and monitor it again to see if its still stable. Then put it on a winder for another three or four days and check it again. That might weed out the worst of them.
Also, having the ability to ship out a complete 7750 replacement movement with adaptive gearing already installed - ready for my watchmaker to pop in - would be great. Having a ready replacement might make it easier for me to find someone willing to fix a broken one. I know most dealers say "ship it back and I'll fix it" but I'm pretty risk averse (and cheap) and don't want to expose myself to Customs Risk (x2) plus the shipping charges to China or wherever - which can be rather steep. I'd much rather ship overnight to Katt or Strodda here in the States so anything I can do to make their job easier is an A+++
Come to think of it, maybe a way for you (as a dealer) to help all dealers would be to reach out to all RWI repair dudes and see if theres anything can be done to help them do what they do - be a source of spare parts, pop-in modules, technical support (or whatever). The easier a 7750 watch is to fix, the less of a barrier a potential breakage is to purchase.
Anyhow, hope this helps.
