I have been pretty happy with my 2010 F150. It has taken us across the country, with little issue towing a 7400# trailer. The issues started this year. The pinion seal has been replaced three times...
What does the Max Payload package get you on the 2015 models? It doesn't look like the 7 lug axles are available anymore. I'd be interested in comparing a Supercab 6.5' with Max Tow against a Supercrew 6.5' with Max Payload/Tow.