Hi I am new to this forum, I was looking for a mountain bike and was almost ready to buy a 2012 diamondback outlook. When i was looking for upgrades that i should consider to pt on the bike, I came across an ad for a diamondback xsl comp. for $220obo. The bike is a 2004 model, and the owner states he is selling because he doesn't use it. The bike is stock and the last tune up(but i will probably do a tune up again anyway) was a year ago. Is this a good bike for the price, what should i offer instead. I need to know asap, because this deal might pass by and the deal on the outlook might end.
Thanks

edit: it is a diamondback xsl comp. not xls