The best replacement for x1 is x3.

The best alternatives to x1 are rated as following:
★★★★★  x3
★★  x16
★★  3 series
★★  tivo
★★  x2
★★  328i
★  x11
★  genie
★  rdx
★  pci express x16
★  hopper
★  copernic
★  q5
★  tiguan
★  q3
★  audi q3
★  x100
★  t440s
★  pcie x4
★  x240
★  bmw x3
  protools 9
  pci e x16
  countryman
  lookeen
  1 series
  x2 comcast
  x1a
  tivo roamio
  4805
  3 series touring
  d-lux 5
  pci-e x16
  x230
  range rover evoque
  pcie x16
  audi q5
  mercedes glk
  gla
  pci x16
  x220
  m8
  320i
  fortuner
  acura rdx
  bose 321
  leica x2
  dvj 1000
  g50vt x5
  e90
  yahoo desktop search
  n97
  mini countryman
  evoque
  d-lux 4
  fuji x100

Your alternative for x1 is not listed? Suggest!
Speaking about x1, one probably shouldn't forget about double play.

Other search terms related to x1 and their ratings are:
★★★★★ double play
★★ serato
You have in mind a companion for x1 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of x1 in all years. Click on graph for more.
x1
x3
x16