I am a 40yo noob wanting to get into biking for fitness/riding with my sons.I have decided to buy a used bike to see how I will do.I have two sedonas on my short list of craigslist bikes.a 2008 for $125 and a sedona SX for $225.The SX owner siad he bought it 5 years ago and it has not moved for 4 years( it looks new).from what I can tell, the sedona sx was only made in 2002.Is this correct? I know the sx has some different componets. Is it that much better that the reg sedona?any help is greatly appreciated.