First post on AVForums so be gentle with me

I'm looking to buy a camcorder and have found these 2 at a reasonable price but not sure which one to go for. I do want a hard drive camcorder as i'm not keen on using tapes (although they will give me better quality i've heard). I don't want to spend a fortune hence why i've found these 2.
Sony HDD SR32: 30GB £279.99
JVC GZ-MG142EK: 40GB £269.99
Not sure about the specs or what the quality of still pictures is like on them. I know the JVC has a memory card slot but not sure how useful that is (what you'd use it for).
Can anyone help me? Maybe shed some light on these camcorders and advise me whether i'm making a good choice?