1) You can choose a paid option, if you want the latest and top chess engines.

2) Or you can choose a free chess engine which are still very strong.

Here are some top paid chess engines and where to get them:

1) Houdini 6.0 x64 (https://www.cruxis.com/chess/houdini.htm)
2) Komodo 3.2 x64 (https://komodochess.com/dragon-3.2.htm)

3) Deep Shredder 13 (https://www.shredderchess.com/windows/deep-shredder-13.html)

1) Stockfish DD: (https://stockfishchess.org/)

2) Gull 2.3:  (https://sourceforge.net/projects/gullchess/)