I need to lose a few inches around my waist, so I'm looking for recommendations on getting a decent motorized treadmill. I used to work out at a gym, so I sorta know what to look out for...as in making sure its got a wide belt, isn't built flimsy, etc, but I'd like to not spend a fortune, either. I went to the local walmart and they had a few around $300 but they all looked flimsy. Looking at sears the quality looks better but they are $600+. any other places I should look?