Hobie Factory ones are the best for durability ( factory one on my current H16 ), however I sold one of my H16's that was a mid 80's model that i put a SLO one peice tramp on and i absolutely loved it, sailed it for about 4 months before i sold the boat. Very comfortable, very clean, lines never fell through and dragged behind boat and it was very very easy on the knees. Anyone I took out on it loved it as well. For a non racer/casual sailor or as an inexpensive replacement on an older boat, I highly recommend them! For any/all other parts tho I always buy genuine Hobie.
1996 H20 Miracle