Voodoo Bantu or Carrera Vulcan

Hi,

I'm looking for some help in buying my first bike, and have joined the forum for some advice

Looking for something I can use when out with the family (paths, tracks and parks) and take out a few times a week on my own to get myself fit. I'm thinking MTB as there are some good trails in my area and I'm not far from a variety of landscapes (Cleveland).

I have narrowed my choice down to two bikes, Voodoo Bantu or Carrera Vulcan, which I can pick up from my local Halfords (I have checked out to find the better store ).

I'm just cant decided over the two bikes, both on offer at the moment:
http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_810715_langId_-1_categoryId_165499

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_786877_langId_-1_categoryId_165499

Any advice would be greatly appreciated...

Can't really afford to spend much more money. As a novice I don't really know the difference between the equipment specs. Not looking to upgrade and want something that lasts.

Thanks