I'm glad that we got the upgrades quickly instead of it dragging on, that's one thing I like about this manga compared to others, it just seems to get to the point quickly!
Overall I think it was a good chapter, would have liked some more pages considering it was the 300th chapter, give us something special maybe even colour pages like come on -.- lol but yeah the new 'rings' look insane, they are going to look quite the bunch walking around school with things like that on them lol wonder what lambos will be considering hes tiny and the new 'rings' seem to be quite big, going to be walking around with some big bling bling sitting in his froo XD hopefully next chapter we see yamamoto wake up and a bit of chrome with that stalker bloke!