The best replacement for r4i is r4.

The best alternatives to r4i are rated as following:
★★★★★  r4
★★★★★  acekard 2i
★★★★  m3i
★★★  r4i gold
★★★  gateway
★★  supercard dstwo
★★  dstwo
★★  acekard
★★  m3i zero
★★  dstti
★★  acekard2i
★★  supercard
★  ak2i
★  bose wave
  r4 difference
  acecard2i
  r2i
  iedge
  acekard 2

Your alternative for r4i is not listed? Suggest!
Speaking about r4i, one probably shouldn't forget about games for dsi.

Other search terms related to r4i and their ratings are:
★★★★★ games for dsi
You have in mind a companion for r4i and it is not yet here? Propose!



Google Trends

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r4i
r4
acekard 2i