I use both Brazil and Maxwell almost daily. Brazil is a great render engine in many respects, but if it’s truly photographic quality renders you need, then Maxwell is the better/best choice. I can’t comment on Brians suggestion of Octane as I haven’t tried it out (yet), but note it’s GPU based, so you’ll need a rather expensive video card(s) to run properly.
Although Maxwell produces some spectacular results (check out their galley pages), it can be slow, you’ll need a hi-end PC/workstation, and network rendering comes as standard (Maxwell 3 comes with network 10 nodes).
I concur with Brians suggestion, you’d be best to demo each of the packages and decide from there. Good luckin whatever you end up choosing.