I like Warwick and I sold 2 Warwick. The two i sold is a 4 string corvette and 5 string corvette. The 4 hand a set of EMG and John East preamp and the bass can eat you alive. The 5 string had bartolini and john east on. The bass also eat you alive, I end up selling it to Andy Saxton (Warwick endorser) in this forum.
Because 1 person had a problem with Warwick does not mean is a bad bass, is like any other bass, some people have problem with Fender, Musicman, Lakland etc.
I quite like my ACG 5 string after spending hours of getting the right sound on the preamp.