A well written and informative piece, though its difficult to comment as most of what I want to say has already been said.

This is by far one of the best and most informative pieces of literature I have ever read.

Thank you for the refreshing and informative piece.

An excellent informative piece of journalism, but hey whats new?

A very passionate, emotive and informative piece.

Beautiful, informative, educational piece of writing.

Your article,Facts about Phosphate by Philip Hunt, was a most informative piece of work.

A right scholarly and highly informative piece of work, eh, friend Worsel?

This was actually a really interesting and informative piece, and read out sort of like a suspense novel.

The first writing test is usually an informative piece based on information given, while the second is an opinionative to be based on statements provided.