Howdy folks. I am shooting a documentary on a Sony Z1U in HDV 1080i and I am piling up 63 minute tapes. When I am done with the documentary I want to make copies of all my original source tapes and dump them on to 276 minute HDV tapes such as this one. http://www.bhphotovideo.com/c/produ...DM_Digital_Master_Videocassette.html#features My school has a couple of HVR-M25Us and I was thinking of dubbing the HDV tapes over firewire. I was curious if anyone has done this and if they noticed any degradation in quality? HDV has been a fun format to work with and I am really impressed with the results. When its lit well it looks amazing. My partner and I played our footage on a 57in Sony flatscreen and were blown away.