[xiiliea]

My absolute favorite would be Nexus. It's literally nonstop action and plot progression, with a really epic story. But there are many other really great series too.

Nexus, Gaia, Ultraseven X, Mebius, and Zero related stuff (Mega Monster Battle + Never Ending Odyssey) get the 5-stars rating from me.

For 4-stars, it would be Tiga, Dyna, Ginga S, X. (Sorry, while I think Ginga S and X are really great, they just went a little overboard with toy gimmicks)