I have been using the Series III for a year and a half now. Here's what I found out.
Series III 5 string bass seems to be much improved over other Rogue basses -- I haven't played another Rogue. It is lighter, basswood body, maple neck could give some people neck dive I suppose.
The Series III is a standard jazz, passive single-coil pickups, one volume and one tone pot per pickup. Standard jazz. It sounds to my ears like a jazz bass should.
No intonation issues: I've made some action adjustments but haven't even had to adjust the intonation yet, several string sets have been on it just to see what it wears well.
To my ears, these sound great with D'Addario Chrome flats, though you have to do some work to get the low B string to mount / slide through that double mass bridge hole.
It's got the 24 frets, but doesn't have the cutaway design that is most useful for playing up there. Personally, I don't except occasionally anyway.
I don't know about the case that you can get for it; I bought a Fender 5 string gig bag for it, fits well.
The jack placement's a little strange for a solid body, it's right on the tail end of the lower bout, about where my Applause had its jack located. But the Applause was a hollow body electric.
Anyhow, I've gigged with mine.
I don't have plans to buy another right now, this one works well. If I did, I'd probably buy a more expensive P/J configuration.