but i heard it has some issues?Yes, it has even got two - electrical (COAX) and optical (TOSLINK).
Just like with about every product, there will be users who experience issues and some who don't. I am using the DX80 frequently and haven't had any problems with it so far.
Do you know the SanDisk Sansa Clip Zip and Clip Plus? There were many reports about quality issues and dying devices. Is it probably due to the way the people treat their stuff? Probably. At least there were also many users, actually the majority, who haven't had any issues with it, including me and many people from another audio community.