The best replacement for a77 is a99.

The best alternatives to a77 are rated as following:
★★★★★  a99
★★★★★  a65
★★★★  d7100
★★★★  70d
★★★★  d7000
★★★  7d
★★★  a57
★★★  d5200
★★★  d5300
★★  a7
★★  nex 7
★★  nex 6
★★  a55
★  canon 7d
★  a58
★  nikon d7000
★  nikon d7100
★  canon 60d
★  canon d7
★  a700
  a900
  a77v
  a850
  a6000
  canon 70d
  sony a57
  b77
  a76
  a177
  a74

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Speaking about a77, one probably shouldn't forget about tamron 70-200.

Other search terms related to a77 and their ratings are:
★★★★★ tamron 70-200
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a77
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