I saw an RX1 setup and race 660' asphalt this weekend in Kirkland Lake Ontario. I found it impressive and consistent and it seemed well setup, although very quiet. It was dialed in at 7.33 for the 660'. I don't find this a quick time, but seemed like all the sleds were having traction problems off the line. It's a very nice looking sled and very quiet, not like video clip I heard from the Yamaha site. Here's a pic. of it running an SRX (not sure if it's a 600 or 700), which was dialed in at 7.4.