I don't know HAProxy that well yet, but I think that Nginx "the company" has degraded severely since purchased by F5.

I used to use nxinx plus, but after moving to a new company and trying to purchase it again, not only had the price quadrupled. I also wasn't able to actually buy a license without four meetings, a shitload of mails and a lot of frustration.

In the end I gave up and kept the community edition while I explore the options.

Nginx clearly moved from the cheap and performany segment to the expensive and cumbersome.