Got a bit fed up with the tns310 so i decided to have a look around ebay and wait for a bargain. I have looked at the tns700's for a while but ended up with the 510 which is a higher spec in a lot of ways. The sound is amazing compared with the tns310 and the tns600 i had. It also has full ipod integration and Full bluetooth hands free. You can also get a DAB module if you like.