That's nice you still have your Now and Zen cassette. Maybe someday you'll listen to the full album.
I hadn't realized until now that you must especially like keyboards, such as in Now and Zen. (I recall you also appreciated them in your favorite Great White song.)
"Hurting Kind" is solid and I like the vocal chorus and layering of sounds in the song. I see there's a video for it, too (which of course I hadn't seen). I didn't notice videos for the other songs from the album, so I'm assuming Robert Plant also felt this was the catchiest song and thus warranted being made into a video:
"Hurting Kind (I've Got My Eyes on You)"
Roller coaster!

I don't recall seeing many videos with roller coasters in them.
Robert Plant - Hurting Kind - YouTube
Two other songs from the Manic Nirvana album caught my attention. I liked "Your Ma Said You Cried in Your Sleep Last Night" because the punk vibe and Plant's voice surprised me. His voice reminded me of Billy Idol's.
My favorite song turned out to be "Anniversary." I wasn't expecting such a gloomy, somber-sounding song after all the peppy, light-hearted ones on that album. I gravitated to this one the most. Listening to the song made me wonder if gloomy songs like this one do good by providing a place to sequester sadness away from oneself, or if they allow people to keep old feelings alive that perhaps best rest dormant.
"Anniversary"
I like the way the song expresses unrest by gradually transitioning from the calm start to the more chaotic finish.
Anniversary-Robert Plant - YouTube