The best replacement for prepaid is contract.

The best alternatives to prepaid are rated as following:
★★★★★  contract
★★★★★  postpaid
★★★★  collect
★★★  plan
★★  529
★★  pay as you go
★  contract cell phone
★  prepaid
★  collect shipping
★  postpaid which is better
★  collect freight
★  contract plans
★  contract verizon
★  contract cell phones
★  straight talk
★  debit
★  freight collect
★  gift card
★  contract what is better
  postpaid at&t
  no contract phone
  postpaid mobile
  savings 529
  contract iphone
  postpaid singapore
  contract phone
  secured credit cards
  pre paid
  deferred revenue
  no contract
  postpaid india
  secured credit card
  postpaid difference
  pay as you go cell phone plans
  at&t prepaid
  plan iphone
  boost mobile
  plan better
  accrued expenses
  unlocked phone
  no contract phones
  globe visibility
  529 plan
  debit cards

Your alternative for prepaid is not listed? Suggest!
Speaking about prepaid, one probably shouldn't forget about free nights and weekends.

Other search terms related to prepaid and their ratings are:

★★★★★ free nights and weekends
★★★★ free incoming calls
★★★ data plan
★★★ international roaming
★★ unlimited text
★★ roaming
★★ free night and weekends
★★ unlimited texting
free nights
unlimited nights and weekends
nights and weekends
You have in mind a companion for prepaid and it is not yet here? Propose!

Google Trends

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