Maryland-based builder Paul Reed Smith set the standard for custom-made high-end guitars starting in the 1980s. Models like the Custom 24 and Custom 22 and endorsers like Carlos Santana helped propel PRS to its standing as one of the most popular guitar makers in the world. Today PRS continues to make its signature models with stunning "10-tops" and Bird Inlays. More recently the Asian-built SE series brings PRS designs to an entry-level market.