hey guys I'm going to be upgradeing from my Yamaha warrior sometime soon and I'm not sure weather I should go with the 400ex or trx450, I know the 400ex has reverse and requires less maintenance but the trx450 is faster and they say you will never get bored of thepower, reverse isn't a need for me, the 400ex is a 2008 for $4400 and the trx450 is a 2007 for $4000