Not sure which box to get

My main priorities are watching football and PPV events like boxing and UFC. I currently have 1,000 Mbps internet through ethernet. and an older SuperBox that buffers quite a bit, so I’m looking to upgrade to something that doesnt buffer as much.

Does anyone have any recommendations for the best model to get? I believe some of the newer models don’t support the full 1,000 Mbps speed through ethernet, so I’d like something that can take advantage of my connection and provide smooth, reliable streaming.