Which bike. Decathlon or Carrera?

bokkie
bokkie Posts: 18
edited July 2011 in MTB buying advice
Hi all. Just looking to get a bike for weekend rides on family friendly tracks with my 5 year old. I'm not going to be doing any serious mountain biking on it so I am just looking for a cheap, yet decent bike. I have been told that the Decathlon are best value for money which led me too this

http://www.decathlon.co.uk/EN/rockrider ... -92622763/

and this

http://www.decathlon.co.uk/EN/rockrider ... 141402418/

I've also been told that Carrera are decent which led me too this

http://www.halfords.com/webapp/wcs/stor ... yId_165499

I can't see the weight of the Decathlon 5.2 or the Carrera Vulcan but saw the vulcan listed as 15 kg on a review website. It also has front suspension, would this be advantageous?

Any input on which I should go for would be greatly appreciated. Any other similarly priced(no more than £200) recommendations are also welcome.
Thanks a stack for any help