High def need some advice

[blakroc]

im deciding if i should get an HD cam, just wondering if its worth it like how much of a pain the files are and stuff?

and are any of these any good? as u can see im on a budget

http://www2.dealtime.com/xPO-DXG-Technology-DXG-580V

http://www2.dealtime.com/xPO-Vivitar-DVR-840XHD

http://www2.dealtime.com/xPO-Sanyo-Sanyo-VPC-TH1EBL-Dual-Video-Photo-Camera-Blue

and whats the flash media mean?