In case it gets cross posted this is a review of [Collection 2 (1986) ASIN: 630340488X] This collection contains five Aunt Jane Movies ("The Moving Finger," "Nemesis," "The Murder at the Vicarage," "At Bertram's Hotel," "They Do It with Mirrors,"]. There is no way to rank these movies as to which one is best. They are like shoes; everyone has a different favorite.
I did look it up to find that all of Agatha Christie's full Miss Marple novels were made in to movies with Joan Hickson as Miss Jane Marple. And this set has 5. Agatha Christie Collection 1 - Boxed Set ASIN: 6303111564, contains 4 more. Then there are three individual films not in the collection boxes.
If you do not obtain them all you will be haunted for the rest of your life wondering what you missed.