The best replacement for 11-16 is 12-24.

The best alternatives to 11-16 are rated as following:
★★★★★  12-24
★★★★  10-22
★★★  12-24 tokina
★★★  sigma 10-20
★★★  10-24
★★★  canon 10-22
★★  nikon 10-24
★★  14-24
★★  tokina 12-24
★★  17-50
★  10-20
★  10-17
★  sigma 8-16
  nikkor 10-24
  tamron 10-24
  canon 17-40
  17-35
  canon 10-22mm
  tamron 17-50
  nikon 10-24mm

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Speaking about 11-16, one probably shouldn't forget about canon 7d.

Other search terms related to 11-16 and their ratings are:
★★★★★ canon 7d
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Google Trends

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11-16
12-24
10-22