Please help me recommend a DV suitable for a concert.

if you are looking for a clear effect, you should choose a high-definition hard disk drive, with clear images and long recording time. Recommended SONY HDR-SR5E

SONY HDR-SR5E is known as the king of high-definition cost performance. Its hardware equipment is basically the same as that of the high-end hard disk drive Sony SR8E, except that the hard disk capacity is reduced to 4 G, and there is no anti-shake. Compared with the standard-definition picture, the high-definition picture it shoots is absolutely clear. It uses the video compression coding mode of MPEG-4 AVC/H.264, which is more efficient and advanced than the traditional image compression format, and the price is less than 7,. It's not easy to edit. It's a pity.