The best replacement for haswell is ivy bridge.

The best alternatives to haswell are rated as following:
★★★★★  ivy bridge
★★★★  sandy bridge
★★★  ivy bridge e
★★★  amd
★★  kaveri
★★  broadwell
★★  ivy
★★  wait for broadwell
★  sandy bridge e
★  ivy bridge gaming
★  xeon
★  crystalwell
★  i7
★  bay trail
★  ivy bridge performance
★  ivy bridge laptop
★  vishera
★  skylake
  core 2 duo
  haswell refresh
  richland
  ivy bridge i7
  amd fx
  wait for macbook pro
  ivy bridge-e
  haswell e
  sandy
  i5

Your alternative for haswell is not listed? Suggest!
Speaking about haswell, one probably shouldn't forget about 1.65v ram.

Other search terms related to haswell and their ratings are:
★★★★★ 1.65v ram
★★★★ old psu
★★ ddr4
retina
You have in mind a companion for haswell and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of haswell in all years. Click on graph for more.
haswell
ivy bridge
sandy bridge