definately, the 2000xl dulls the sound just a bit, which to me i really like...
i own the 1000 and am under the assumption that it has the same sound engine as the 2500
the 2500 definately does not sound too similar to the 3000, i've herd two at a live situation and the 3000 had the more dull and warm sound, but that was probably the way both guys sampled their sh*t..