Interesting article in AVweb ("Fun With Parachute Mode") about the rate of descent in a DA40 with the trim right back and throttle at idle (stalled 'phugoid' mode ?), being in the same order as the Cirrus with the parachute deployed, albeit with the DA40 having 48kts forward velocity.
Parachute in a Plane
In which case does the parachute buy you much?
The article also mentions other planes that can do similar 'parachute mode' ?