Speakers can change an amp just as much as a pickup can change a guitar.
The only problem with V30s is in amps that don't have negative feedback in their design, you get a weird sounding harmonic as the speaker gets pushed hard. For years we'd settled on V30s as the main speaker at Matamp, and Dave and I spent ages trying to figure out where the harmonic was coming from, one day we plugged a different speaker in....
V30s have a better high mid, and I have to say I'm not sure I'd describe it as scooped. No celestion sounds that scooped to me, that's the celestion tone, Jensens do have a more scooped sound. Anyway, the V30 has the ability to make dodgy sounding amps sound better, and good amps sound good too. But, I find they don't always let the sound of the amp through, it always sounds like a V30!
It’s a loud speaker, very efficient, which is good, and the mid helps you be heard in a band. Sometimes an Alnico Blue sounds better, and sometimes G12Hs, Ts or Greenbacks, but you know that the V30 will give you the V30 sound with most amps. If you like it, then great go for it. I do! I guess the V30 is a but like an EMG….