I own a pair of 4430, and I believe Ditusa does as well.
If WAF is important, probably the 250ti gets the vote.
The 4430 can probably be gotten for less money, but many you find may be very well hammered to death in the studios, and might need some substantial TLC.
I cannot comment on comparisons of sound, but as I understand it, the 250ti is claimed to be one hell of a great speaker. All things being equal, doubtful you would go wrong with either. Mark