Excers

So, I'm looking to lift my 2015 Lariat 6 inches and both local shops have had different opinions. The shops that focus on lifts say RC and ProComp are good but RC isn't usually perfect so they always have to contact RC and get a part of supposedly make it perfectly level. Another shop that is also a lifted truck dealership is saying RC is terrible because it changes the trucks geometry and I should go with Trail Master or Pro Comp. I haven't heard anything about Trail Master but what do you guys think?