Choose your words:

Acclaimed playwright-actor returns home for a laudable/laudatory cause

When it was published, the most laudable/laudatory review came from the novelist Anthony Burgess.

In the first sentence a playwright-actor comes home for a good cause, a praiseworthy cause. That's laudable. Though a positive word, laudable many times precedes a negative follow-up statement.

I soon realized that the efforts, though laudable, have a ways to go to meet the standard being set in my hometown.

Cutting taxes laudable, but some city needs must be addressed

In the second sentence, Burgess gave a positive review of the it mentioned. The review itself isn't being described as praiseworthy, the review was doing the praising. We want laudatory here.

A trio of laudatory articles on Amazon in recent days compelled one to take another look at the company's performance.

Thomas Keneally wrote a laudatory biography of Hasler in 1993 titled Utility Player.

The difference to watch for between these adjectives is who or what is receiving the praise. If the noun that the adjective modifies is receiving the praise, such as a worthy cause, then choose laudable. Think able to be praised. If the noun is giving the praise to something else, such as a positive review of a book, then choose laudatory.