Between myself, wife, and two daughters, I drive a 100 Series, my oldest has a GX470, and my wife and youngest both have 5th gen 4runners. Since you have an 80 to play with, I would definately go with a 5th Gen. They are arguably just as reliable as a 100 series with easier and cheaper parts, get better gas mileage, and are really comfortable if you get a Premium or TRD Pro.