Hello all. I have found 2 Grizzly 125's that I am considering for my 7 year old son. The 2005 seems to be in near perfect condition and the 2013 is in good condition with a few bumps and bruises. There is a $500 price difference between the two, with the 2013 model being more expensive. My question is are there any major differences between the two model years that I am unaware of. Thank you in advance for any help.