The best replacement for combo is stack.

The best alternatives to combo are rated as following:
★★★★★  stack
★★★★★  head
★★★★  half stack
★★★  plain edge
★★  head and cab
★★  superdrive
★  caddy
★  straight edge
★  head amp
★  frontline plus
★  berlingo
★  delta update
★  stack amp
★  stack amps
  head and cabinet
  balrog
  150 combo
  space bag 5-pc. vacuum storage bag combo
  astra van
  washer and dryer
  fiat doblo
  stack bass
  20ga 22cal matched pair
  cobra s3 pro
  chademo
  legacy combo
  trifecta combo
  dvd rw
  6505 combo
  armor damage
  modem router
  tenacity ap spinning combo
  frontline
  renault kangoo

Your alternative for combo is not listed? Suggest!
Speaking about combo, one probably shouldn't forget about living quarters.

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



Google Trends

Scale is based on the average worldwide traffic of combo in all years. Click on graph for more.
combo
stack
head