Purchased a m+ flamingo blue from GenReps awhile back. Service is top notch. Communication and prompt shipping with updates. You remove the trepidation of having to deal with customs and wait times if you're buying within his inventory.
I ended up modding mine so I don't have to deal with the eventual breakdown of the A7750 that's modded to hell and back. I had a A05.H31 movement laying around that needed to get back to work so despite the date setting inconvenience, I decided longevity, 60 hr power reserve and reliability was more attractive than waiting for the Chinese movement to break. Fun and frustrating project overall but satisfied in the end. Would 100% rather have used a SW510 but thx to tarriffs I am unable to source one for now. An eta 7753 was also on the table but I went with a bigger mainspring.