Deciding between a new HSC of 320 hp @ 3000 lbs and the first gen NSX is not that simple because even if the new car has a small increase of power, it will certainly be lighter.
And with a presumably 7 speed shiftpaddle gearbox and with improved aerodynamic and braking this new car will be considerably funnier to drive, IMO.
What I am saying is we will have to wait until a few test drive before concluding now.
But IMVVHO, looking what's happening with the latest TL, I just can't believe less than 400 hp for the next NSX/HSC.
In fact, the only way for Honda to shake the sportscar world again, à la Honda way, is to offer for less than 70K$ a less than 2,8 kg/hp sportscar like this:
V6 3,5 to 3,8 L @ more than 110 hp/liter for less than 2800 lb curb weight.
Best scenario for Honda:
125 hp/L with a 3,8 L V6 engine for 1250 kg
But I am sure that the new HSC will be addictive to drive even at 290 hp @ 3000 lbs...