Much better than the first battle stage in my opinion, as well as much longer.
Better visuals, and new eurobeat tracks on each race too!
It's a packing of all the races from the fourth stage but it also adds some races that were exclusive to the manga, which is really nice and interesting.
You can see a lot of what Keisuke went through and how his character evolved before fifth stage as the newly animated races are focused on him.
Makes it actually worth watching even if you've seen the entire fourth stage.
Overall a nice experience to rewatch old races and to remember the good moments too.