I look at that v4
and the Daytona 955i looks better than ever . Not much cost, 161 HP, 422lbs and a terrific sounding engine. Honestly, between 8,000 and 12,000 rpm it's all I can do to hang on. The last two outings netted me two speeding tickets, both came after slowing down from the fun zone. More power would not be helpful.
It's even built in England if that is your preference. The triples tend to run forever and parts are readily available.
There are quite a few around to choose from.
That might be a negative for some. The draw of owning something that only a few own is immense. It doesn't seem to translate into a great riding experience from what I can see. For that you need a bike that will run properly for a long time.
It seems strange that anyone would put themselves through the agony of 44,000 GBP for the Norton, then deal with unknown reliability and parts supply. Just because it says Norton on the tank? Decals are cheap.
But we do some strange things to get the " right" motorcycle.
Such as locking yourself in a shed for two winters in order to build a lightweight Norton!
So I'm in no position to give advice
Glen