Most powerful pot light 6 in?

Looking to get 6-in recessed pot lights, the low profile ones with the j-box separate. I got some amico ones from Amazon, and they're good, but I feel like they're not bright enough. We have 12 foot ceilings and four up here to not be enough, but I really don't want to at two more to the setup.

Please let me know what your recommendations are.