The best replacement for paint roller is sprayer.

The best alternatives to paint roller are rated as following:
★★★★★  sprayer
★★★★★  brush
★★  paint sprayer
★  spray gun
★  paint brush
  airless sprayer

Your alternative for paint roller is not listed? Suggest!
Speaking about paint roller, one probably shouldn't forget about texture.

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



Google Trends

Scale is based on the average worldwide traffic of paint roller in all years. Click on graph for more.
paint roller
sprayer
brush