I own both and I like aspects of each. The issues are overblown as I have yet to experience any of the issues people complain about along with 4 friends who haven't been hit with any. Majority of the issues seem to come from the 2016 builds.
If you want a Tundra, get one. I think they are awesome but I don't have a need for a truck, much less a truck that size.
Having a paid off '13 4R has to be pretty damn nice though, I would enjoy that.