Well I had a Sharp DT-510 and it screwed up and I ended up sending it back hoping to get another one, but TD was all out and I have been waiting for them to come back, but it looks like it's not going to happen also when I decided to bite on the x9 they were also gone. I heard these are very close if not somewhat better than the dt-510. So which one is the closest? I am running on low money due to losing my job a few months back.