Stay away from HD and DVD based camcorders. DVD/HD cams are new territory in the camcorder field, many revisions historically look down upon them.
Go with MiniDV, they are cheaper, and alot easier to transfer/edit. And a proven storage media for over 11 years. But dont mistake miniDV for old technology, it still holds the best quality for all consumer camcorders.
Now I would go with a Sony Based miniDV camcorder... And you dont need an external mic, a good amount of decent sony based miniDV camcorders come with accessory shoes, and sony offers shotgun mics for < $70..
There are so many different models to choose from. Just find one that suits your needs and come back and I will tell you what i think.
And those $1,000 GL-2's are scams.....