^Entirely up to you which KR series to watch next, there's KR Blade, KR Hibiki, and can't forget KR Kabuto, which is close to ending, cause the new KR Den-O starts at the end of the month.
Did you watch the Faiz movie "Paradise Lost"?
Its a good one, its setup as an alternate timeline, not meant to follow the series, but all the characters are there, with some differences.
KR Ryuki is another series which came before Faiz.
The Kamen Rider series aren't related in terms of storyline, each one is separate with its own story and characters.
I've like each one that I've seen completely: Faiz, Blade, Hibiki.
I definitely recommend Kabuto, its a helluva series, but each one that I've watched is good, IMO.
One last thing is to take each series separately, and try not to compare with others, that way you can enjoy each series for it is, but that is just my opinion on this.
Have fun with which ever one you decide on.
