>>280053631The first thing you need to know is that the new anime is not a remake, but an adaptation of the revival manga that's been running since 2011. There's a recap episode that goes over key moments from the original to get people up to speed, but it's mainly for people that have read the manga.
For the most part it's better animated than the original in every way Ramenman vs Marvellous aside and is less shy about blood and guts to boot. I don't like how washed out and bright it looks all the time and the music isn't as memorable.