I love my c2300 Nordic track treadmill! I purchased it 3 months ago from Craigslist and got it for a super price. The cushioning grommets (i think that is what they are called) slipped a little and it caused the board to creak and crack when I walked, but it was easily adjusted by my husband. I have been jogging and running on this treadmill at least 5 times a week since I got it and love the different programmed runs. (there are 4) the inclines and speed are challenging but I keep building stamina. Definately reccommend:-)