Another angle to consider is the suspension on the car. Elite suspension is soft, and with soft suspension comes camber change due to front geometry and mcferson strut suspension.
Add to that some reasonably progressive driving and tyres wear rounded on the front while still showing reasonable tread depth in the middle, and flat in the middle on the back while still showing good shoulder tread depth.
Point being, no point fitting top end tyres to Elite suspension and cracking on in the twisties. They will degrade into wobbly undrivable rubbish well before all the tread had gone. Ad to that mix Falken 912's which have grip and stability problems from new and a total and utter nightmare reveals itself in the omega steering wheel just driving in a straight line.
Anyway, ime I wouldn't recommend anything cheaper than Kumho ku31 personally.
Re the subjective nature of " the perfect tyre" well I think we are unwittingly starting to narrow it down. Understanding the needs is key. If your an A to B driver and see tyre choice as purely an inconvenience when the old ones wear out than Michelins start to make sense. Expensive initially granted, but if they last twice as long but are not twice as expensive then fine. Just don't expect them to grip too well. They are not the choice for, oh bugger it, aggressive drivers, there said it, who expect total performance and grip levels that work.
We do have a rare opportunity to narrow down a tyre that works on a particular car. But "a tyre" that will work in various driver brackets. Top end nutter bastards down to driving miss Daisy will all have a preference. Put the right drivers in the right brackets and you WILL get consistent views.
Time effort and being scientific enough to log it all correctly is bound to be the downfall sadly. It's just not practical.