The best replacement for slr is dslr.

The best alternatives to slr are rated as following:
★★★★★  dslr
★★★★★  point and shoot
★★★★  digital
★★★  compact
★★  rangefinder
★  dslr camera
★  digital camera
★  sls
★  digital cameras
★  nikon slr
★  canon slr
★  camcorder
★  sgl
★  slr like
★  slt
  film slr
  point and shoot camera
  enzo
  e55
  lr
  dslr which is better
  micro four thirds
  35mm
  dslr cameras
  eos
  canon
  dslr difference
  slr-like
  canon dslr
  point shoot
  compact camera
  599
  prosumer
  lalr
  digicam
  nikon
  point and shoot cameras
  mega zoom
  dslm
  film
  carrera gt
  evf

Your alternative for slr is not listed? Suggest!
Speaking about slr, one probably shouldn't forget about hd video.

Other search terms related to slr and their ratings are:
★★★★★ hd video
You have in mind a companion for slr and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of slr in all years. Click on graph for more.
slr
dslr
point and shoot