I'm considering a D5 dinghy because the plans are free and it looks easy to build. That Pippee is looking nice though.
I liked my D5. One thing I was looking for in the plans that I am building now, is for a longitudinal bench. There isn't any way to balance the boat in the D5, or other boats with tranverse benches. OTOH, the D5 rows a lot staighter with a passenger in the back.