I'm in the market for a 5'er that has a GVWR of 16,600. I've pretty much decided on a 3500 crewcab long bed diesel dually for a tow vehicle. Most of the used trucks I see (GMC/Chev) have 4WD. Is ...
I've had IFS and SFA 4x4s and I prefer the way the SFA rigs handle in most conditions offroad. The pumpkin hangs lower but if you know what you're doing you have better clearance and performance than you do with IFS. If all you do it bomb up and down washboard roads IFS could be a better fit.
At the end of the day it's not a real material difference most of the time.