Hi Dave,
Interesting thread and it is a tough call between the 2 and you raise very valid points, as a bit of background and my general thoughts, we had 2 Cup 360's made in Essex Blue and sold one of the cars just before Christmas and have one remaining. The Sport 380 is obviously very nice and a step forward over the Sport 350 but is £68,500 without OTR costs or any options Like paint or A/C etc.. by the time you have ticked a couple of must have options and with the OTR costs you are getting towards the mid £70's for the Sport 380, whereas with our Cup 360 with all of its spec is £68k On the Road. I would wager that the Ohlins on our Cup 360 would provide more time in a lap than the extra 20PS of a Sport 380 on tuned Bilsteins. Lotus tell me that Ohlins are generally worth a second a lap at Hethel over Nitrons and the Nitrons are worth a couple of seconds over the Bilsteins......I don't know how true this is but it is what I have been told by Motorsport. There is a potential weight difference between the 2 as the Cup 360 is 1,130KG and you can get a Sport 380 to 1,100KG but need the full Carbon Exterior and Interior + the Titanium Exhaust which then adds another £10k+ to the bill so it becomes a mid £80's car, if you don't have these options then the weight is approx. the same between the cars. It is an interesting question and there are certainly arguments for both.............I'm glad to say though at the end of the day both are very special.