I love the look, feel, hang, durabiltiy, etc of 16oz kilting fabric. Just feels more like a "real" kilt somehow.

But... when I was going to get my muted Drummond of Perth kilt (seen in my avatar) I went with the 13oz because, sadly, the colours in the same mill's 16oz weren't as nice. For whatever reason, several of the colours which appear in that tartan are slightly different in the 13 and the 16oz stuff.

I love my kilt and it looks great and is wearing fine. (Made by Wanda McSwain by the way.)