With any mail processor, you're sort of married to them once you start giving out the address. I spent months agonizing over who I was going to tie myself to (and did quite a bit of research from HN folks [1] [2] providing their recommendations). In the end, I picked the vendor I did because I only get a few pieces of mail a month, they're responsive, and I can use them for residency purposes [3] (as my long term plan is to bounce from the US and be an expat). And unlike a startup, they have some longevity track record and are likely to continue to exist into the future, which is important when everyone is going to have them as your mailing address.

[1] https://news.ycombinator.com/item?id=5822052

[2] https://news.ycombinator.com/item?id=19076624

[3] https://theboatgalley.com/establishing-residency-at-st-brend...