The best replacement for 60d is 7d.

The best alternatives to 60d are rated as following:
★★★★★  7d
★★★★★  t3i
★★★  70d
★★★  t5i
★★  d7000
★★  t2i
★★  t4i
★★  6d
★★  5d
★★  50d
★  600d
★  nikon d7000
★  d90
★  d5200
★  sl1
★  d3200
★  60da
★  550d
  d5100
  gh2
  7d for video
  rebel
  canon 7d
  5d mark iii
  40d
  nikon d5200
  7d video
  d7100
  a55
  nikon d90
  t3i for video
  7d which one to buy
  650d
  nikon d5100
  700d
  d5300
  sony a55
  canon t4i
  600d for video
  canon 500d

Your alternative for 60d is not listed? Suggest!
Speaking about 60d, one probably shouldn't forget about magic lantern.

Other search terms related to 60d and their ratings are:
★★★★★ magic lantern
★★★★★ 50mm 1.4
★★★★ 24-105
★★★★ 50mm 1.8
★★ kit lens
★★ 24-70
★★ 18-200
★ 24-105mm
★ nikon d7000
★ 430ex ii
24 105
18 200
24 70
17 40
You have in mind a companion for 60d and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 60d in all years. Click on graph for more.
60d
7d
t3i