The best replacement for optimum is optimal.

The best alternatives to optimum are rated as following:
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★★★★  verizon
★  time warner
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★  directv
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★  direct tv
★  icomfort
★  verizon internet
★  optimal definition
★  time warner cable
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  cablevision
  dymatize
  serta icomfort
  maximum
  syntha-6
  fios tv
  bsn
  att uverse
  verizon dsl
  serta i comfort
  myofusion
  i comfort

Your alternative for optimum is not listed? Suggest!
Speaking about optimum, one probably shouldn't forget about free ipod touch.

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Google Trends

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