The best replacement for realtek is creative.

The best alternatives to realtek are rated as following:
★★★★★  creative
★★★  sound blaster
★★★  intel lan
★★★  via
★★  atheros
★★  conexant
★★  broadcom
★  idt
★  nvidia audio driver
★  soundmax
★  intel nic
★  audigy
★  xonar dg
★  intel audio
★  via audio
★  ralink
★  ati hdmi driver
★  marvell
  adi
  x-fi
  creative x-fi
  sigmatel
  sigma chipset
  intel ethernet
  3com

Your alternative for realtek is not listed? Suggest!
Speaking about realtek, one probably shouldn't forget about stereo mix.

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



Google Trends

Scale is based on the average worldwide traffic of realtek in all years. Click on graph for more.
realtek
creative
sound blaster