The 17" FJC wheels looks rugged simple and orig.
For me, though the 16" TRD wheels looks nice and sure expensive...when I stare at it over time , there is something...lika aftermarket look in it(thats just me).
And IMO, 16" have more tire choices than 17", I don't know today.
I also love the 16" 2009 4Runner Trail Edition rims. Its 5-spokes. The same wheel they put on the FJC Trail.