The D05 is just bouncier and harder to control than D09c in general. I really loved the feel of boosted D09c, it was like a combining the best of T05 and D09c. It was still fairly easy to use for the short game, but the sponge was much easier to activate. Since you're getting bubbles on them maybe you boosted more than I did and last longer, but for me the boost effect lasted only a couple weeks and it was a pretty dramatic difference when it went away.I did an update on original post in case someone is interested.