The underlined aspect of Saki's writing is sardonic humor. Writing satires came easily to him, i guess. Perhaps, this provides for Saki's high position amongst short story writers.
Be it the series on Reginald or that on Clovis, each small tale is laced with light satire. Something that enlightens us of our foolishness, intelligence, farsightedness in a mild fashion. To read Saki is fun. The easiness with which the plot runs. Moreover his short stories are short. Flipping the pages is a quick job, reading one after another.
Collected Short Stories of Saki
Hector Hugh Munro
This book has all the short stories except for one. It's worth buying the book, if you ask me. Moreover, Saki is re-readable, a few times over in the least.