I really loved the Japanese cartoon, as it didn't have as much of a ridiculous feel as some of the earlier versions of the G1 cartoon(US cartoon).
It had a slightly darker tone which I really liked.

I started watching a bit on youtube and DVDs and I am quite impressed. Especially liked the Scramble City bonus episode.

I would definitely recommend watching it or rewatching it if you have already, because it feels quite unique, special and quite a significant part of the Japanese transformers timeline, IMO.