I’ve had a CV, good basses, got a V4 Tony Butler, great bass. If you like slimmer necks I’d go CV, if you like medium go regular V4, if you like a real chunker get the Tony Butler.
Additionally the Vintage V4 TB to me just feels more substantial, it just has a real reassuring feel to it. It’s the nearest bass I’ve found to my US Standards in feel, playability and sound.
And lastly there are a couple of V4s up for grabs on here at the moment at very good prices, serious amount of instrument for what they’re up for.