How much do you prefer the 4.0 to the 3.0? Here's a little background info: i'm 20 years old, an avid hunter, I'm married with a two year old daughter. I have found a 2001 3.0 ranger with opening side doors - 3500. I have also found a 1998 4.0 ranger with no opening side doors for 4000. 3.0 has...