Hi I'm looking to buy a treadmill in UK, not a big range here. Undecided between Sole 65, (2013 model £999), Sole 80 (2016 model, benefit of wider running belt 22 inch, £1499) or perhaps a Nordictrack? I'm planning to use treadmill for interval training, walk/jog not sprinting. I'm impressed by the reviews of Sole regarding build quality and aftercare, but also see that Nordictrack are in no.1 position for this price range. Is it important to try the treadmills out first? I can't tell from internet reviews whether the 22inch running track width is a different experience from 20 inch in terms of comfort, and there is no local store selling these high quality treadmills. Also, I wondered how useful is the optional extra of running downhill on the Nordictrack? Thanks!