im STILL looking for a camcorder and because i dont know s**t about camcorders I am in desperate need of help.

these are the ones i've picked out and also the price range i'm going for (around $250-350):

http://www.walmart.com/catalog/product.do?product_...

http://www.walmart.com/catalog/product.do?product_...

http://www.walmart.com/catalog/product.do?product_...

http://www.walmart.com/catalog/product.do?product_...

is it worth it to spend $100 more for the same camcorder with 12 GB more internal memory?

any comments on the cameras and other suggestions would be greatly appreciated!

(sorry for the walmart links, that's just where i was browsing:D)