There's always the 18-35 if you need versatility and light weight. IQ is none too shabby.
I have the 18-35 and it's about as heavy and about the same size as an 85/1.8 I'd say - deffo a helluva lot lighter than the 14-24!
I'm odd in that I actually prefer the feel of the 'plastic' lenses. (Gets coat...)
Its something I've changed my tune on over the years and its partly because of the Nikon "G" Primes, they're stunning IQ wise but not as nicely build as the older metal D primes, but if they're lighter and better what do I care if its plastic, its the modern way