The best replacement for 16-35mm is 14-24mm.

The best alternatives to 16-35mm are rated as following:
★★★★★  14-24mm
★★★★★  17-40mm
★★★★  24-70mm
★★★  14mm
★★★  17-35mm
★★  24mm 1.4
★  17-40
★  17-55mm
  canon 17-40mm
  10-22mm
  14-24

Your alternative for 16-35mm is not listed? Suggest!
Speaking about 16-35mm, one probably shouldn't forget about d800.

Other search terms related to 16-35mm and their ratings are:
★★★★★ d800
★★ 7d
You have in mind a companion for 16-35mm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 16-35mm in all years. Click on graph for more.
16-35mm
14-24mm
17-40mm