So I recently gave my 2003 Rockhopper to my 14 year old son and am in need of a new ride. I would really like to keep my budget at $400 so I can get a new rider sooner then later. I am 40 years old and don't plan on hurdling myself down single track at mach 5 anymore, but would like to ride some single track every so often. I figure most of my riding will be paved and groomed gravel/dirt type trails. Hoping some folks provide some suggestions on what $400 options I have. One bike I have been considering is the Nashbar 27.5 for $325. It seems to have decent specs for the money. Thanks in advance.