Help and advice needed please!

Hi guys and gals,

I looking at returning to the saddle after some time away due to work commitments and family commitments.

I'm 5ft 9 with a 29" inside leg. I'm looking to get an mtb with 27 gears and I mainly ride road/Tarmac and trail riding. Some of the options I have come up with are as listed so any advice will be greatly welcomed.

http://www.bikeradar.com/mtb/gear/categ ... pro-49836/


http://www.halfords.com/cycling/bikes/m ... -bike-2015


http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-GB

Any comments and buying advice are greatly welcomed

Thank you