Just got a T25 for my kid for Christmas and he LOVES it. Once I get it set up right, it'll be even better (see my post about tuners, yeah, another clueless metalhead, how do you BREAK Grover Tuners?).
The kid plays Metal and needed the 5 string for Metallica covers, ADADG tuning. The sound and sustain are amazing! We run it through a Digitek Bass OD pedal to a Crate amp right now, but will be going to a Peavey 600 watt head and Ampeg cabs soon.
We own several Washburns and this is by far the best Bass we have in our collection. (OB30, XB100, XB102, and now the T25) Yes, I actually get to play it every so often. LOL Don't get me wrong, the others are sweet too, but the T25 is a cut above. I have owned and played Washburns for decades and will so long as I live. Till they pry my XB from my cold, dead fingers. LOL