I'm about to buy my boys (ages 10 and 8) their first bikes, and have settled on a Honda CRF 80 for my 10 year old and either a Honda CRF 50 or Yamaha TT-R 50 for my 8 year old. Any opinions on the 50 are welcome (best I can tell the only major difference is that the Yamaha has an electric start), but my question is whether you would buy a brand new (from the dealer) 2007 CRF 80. The bike is still in crate, and I would save about $1000 versus a new 2013. Anything I should be concerned about? I'm thinking the tires may need to be replaced? Any feedback / thoughts would be greatly appreciated. Thanks.