Time for a new SUV, what to get?

[Rider]

The lease is up on my 2007 Acadia and it's time to replace it. Right now I'm between an Expedition and a Tahoe/Yukon. I'm looking for feedback on reliability on either of these.

I know the ford 5.4L had had some serious issues with spark plugs breaking off in the cylinder head when trying to remove and the exhaust manifolds are prone to cracking. The Tahoe/Yukon have had issues with the 4WD transfer module. Any other issues I should be aware of?

I'm towing a boat so this is why I need a big SUV.

I'm also buying a couple years old because I want to get out of the lease cycle. It would be nice to be car payment free in a few years.