- SWIFT for small/low-traffic sites with less than 400 pages and 50k monthly visits. Main Swift advantage is the cache prebuild.
- LITESPEED for large/high-traffic sites with over 1k pages and 100k monthly visits. Any sites needing object-cache is also better with LS.
- Any sites in the range of 400-1000 pages and 50-100k monthly traffic can go either way, it really depends. As always some sites will cache better with one plugin than the other.
Swift Performance & LiteSpeed Cache are my favorite WordPress caching plugins. They work great for any site on my servers but I may prefer one over the other depending on the plugins used, and the site’s traffic.