My recolletion is that the JP is similar to the new Starboard Ultrasonic 147. I can't say which is better since I haven't sailed either one, but the 147 is getting GREAT reviews.
Neither will plane as early as your 160 (I have one too). The newer formula boards - 161, 162, LWR/HWR all have wider tails and should plane a little earlier than the 160, but I doubt the difference will be noticiable.
A buddy of mine just received a new LWR and I still plane quicker than he does with the same size sails last week (Maui Sails 9.2, TR 6 for me and TR 7 for him) However, he weighs about 25 lbs more than me.
I would say, stick with what you have.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.
Last edited by Ken; 18th August 2011 at 12:35 AM.