I currently have a Cherokee, inline 6, with close to a quarter of a million miles on it and it runs like a top. I plan on trying to see how long I can keep it on the road. It would be my choice for my BOV since I have it and it is paid for. I picked it up with 193K on it for 2K 7 years ago. Probably the best auto buy I have ever had, even though some things are falling off of it now.
I6 FTW! the thing doesn't have many ponies but makes up for in reliability. I'm just waiting for mine to go out so I can put a stroker in it. I'm thinking 4.6 liters, that will put me somewhere in the 300 hp range and for the cost of a stock replacement engine.