It's mostly for band show recording. So low light performance is a big concern.
Also, I would like a camera that can shoot both HD and SD.
What camera do you suggest?
Thanks for you help.

Without knowing your budget, its hard to give you a recommendation. The Sony EX-1 is probably the best low-light under $8K, but do you want to roll tape or is tapeless ok for you.

You might want to do a search on the forum, as this issue has come up often.