The Warwicks I have owned and played were all phenomenal quality instruments.
They play light, are really easy to set up and usually allow for ultra low action and lots of playing comfort.
BUT
Warwicks have a sound all their own. I found they were a bit too perfect for their own good. When digging in they would just get louder but not snarl or growl (they do have an always growly midrangey character though). They keep sounding articulate and clear at all times, at all positions across the neck. This is not for everyone.
After laying hands on a Fodera NYC Empire, which is essentially an active jazz bass with Mike Pope pre, I decided it was time to say goodbye to Warwicks. This bass is much more responsive and full of character. It translates what I throw at it into sound better in my opinion.
Moral of the story: Warwicks are awesome, but not everyone will like their characteristics.