What is difference between Query classes and Select query?

• Query instances can be created from AOT queries.
• Query instances can be changed at runtime.
• Query instances can be passed to other objects.
• Query instances can be packed and saved for later use.
• Some features are supported by Query class but not by select statement, e.g. union queries.
• Select statements are much easier to read.
• Query framework gets worse compiler control than select statements.