To address some even odder comments:
1. We don't actually know what the final production Emira is going to have for horsepower because we haven't seen that car yet. Matt the man in charge of it all, says the engine in the Emira has 416 hp, so unless the final production car shows otherwise, and regardless of the printed number of 400 (which is a target number), it's not unreasonable to assume the engine has 416 at this point in time.
2. Lotus has "detuned" the engine for sales purposes. When asked this, Lotus has said they have NOT detuned the engine. So who do we believe; the people who are making the car, or internet posters?
3. The Evora 430 is faster around Hethel than the Emira. There is no data showing that, and Gavan Kershaw, the man in charge of the performance of the Emira, who personally drives it and anything else he wants around Hethel (including an Evora 430), has stated the Emira is faster than the Evora. So who do we believe; a legendary chassis expert who's in charge of developing the performance of the car, or internet posters?
4. 'Best' = quicker, faster, more power. It may to some, but not to all. Some like being able to use the range of power while manually shifting through gears, instead of just leaving it in 3rd the whole time because it has so much power that's all you can do. Some like enjoying the performance from a low rpm all the way up, instead of only having fun when the rpm gets above 4,000 because that's the only time the car comes alive; below that it's unremarkable. Some like turning the steering wheel and shifting more than just mashing down the gas pedal. Some like the overall experience, including sound, instead of just maximum speed. Therefore, 'best' is subjective.
I personally believe the V6 is there for one reason; the manual transmission, and that's as an homage and to pay respect to the era of the ICE sports car. As for power, Lotus has already indicated the i4 is going to be the champion in that department, so for those who want a more powerful Emira than the V6 is going to deliver, the i4 is the version for you. You'll just have to wait a few years to get one, but then that seems to be the new experience to buy a new performance vehicle now.