Manring is probably my favourite player and one of the most revolutionary I`ve ever heard.
From his solo work, his 2 first albums ("Unusual weather" and "Towards the center of the night") are more new age oriented and the bass isn`t so prominent.
His 3rd solo album ("Drastic Measures") starts to show the Manring that`s more well know to the masses. That`s when he started using his Zon Hyperbass and experiments with altered tunings, Ebow and extended solo pieces (like his 2 basses tune "Watson and Crick"). You`ll also find beautiful versions of tunes by Chick Corea, Sting and Jimi Hendrix (of course, with the distinctive Manring flavour
His 4th album is a turnover. In "Thonk" he rocks, literally. Is a rock album where he plays with guys like Steve Morse, Alex Skolnick and Tim Alexander. IMHO, is an amazing album, a piece of work you`d never expect from Manring.
He takes the bass role even further, making it sound like a guitar, expanding Ebow capabilities even more, playing 3 basses simultaneously (without sounding like a Circus freak show) and much more.
He then took it from there and recorded 2 more albums with Skolnick and Alexander, in a project called "Attention deficit". It`s like an "avant garde experimental rock trio". There`s a lot more from him (multiple recordings with several artists bassists, guitar players, singers, early work with Michael Hedges and many more)
I don`t feel so qualified to comment his last 2 solo albums "The book of flame" and "Soliloquy". His experimentation goes even further (sometimes even for me) and it`s really important to read the inner notes of each album so you can fully appreciate what was the artist intention and the way it was played an recorded.