Henry...not sure if your still paying attention to this thread after the "whose rig is the better wheeler" battle, but...
Don't make the mistake I did investing time, money and sentiment in a rig that is too small. I am not sure how many kids you have when you say "family", but don't be a dumb @$$ like me and forget that they grow up.
I can't speak for the 4th gen runner, but if you haven't seen my thread on my heartbreaking switch to the LC, here it is.
http://www.expeditionportal.com/forum/showthread.php?t=48373
I bought my LC on Monday of this week...someday I hope it to be as modified as my runner is...but that takes time and money.
I have yet to experience my LC other than driving it home, but if I only had two kids, I would have kept my runner for the long haul. It is such a great, nimble rig for Colorado Trails. It will take thousands of dollars and lots of hours of work, before my LC will win my love away from my runner.
I find it interesting that you seem to be questioning the same thing I was. Let us know what you end up doing.