pros: no ads or random pauses, instant playback, customizable/tons of options, off-load chat, pretty seamless integration.

cons: delay is longer than the default viewer, no replacement for the sidebar showing who is live/following, 2k/encrypted streams weren't working but idk if they patched it, can't get 7TV/emotes working but I could just be stupid.

alt player is good for lurking/watching but the delay & difficulty getting emotes may ruin it for active chatters. very good for clippers/editors since it has playback. im not really sure if drops/gift subs work but i assume they do if you have chat enabled.