An 18-135 for $240 Canadian is pretty much a no brainer. I paid $600 for mine.
The advantages of the 16-85 are marginally better IQ , but often not discernibly different, and 2mm wider,
which is completely negated by carrying the Sigma 8-16 or another UWA with it.
The 18-135 with the 55-300 is a nice walkaround kit. Smallish, fits in a shoulder camera bag easily. Covers a lot of range. with excellence in centre sharpness all through it's range. Some pseudo macro images of very small flowers.
18-135 images
Honestly people talking about this lens being soft are seriously misguided. The images don't lie.
And PS, all shot at that "un-necessary", (edge soft) 135mm.