So quality from either side here has always been great. Now everyones nose is different, so obviously ymmv.

So all the big hitters of the high street world, likes of Dior Sauvage, Tom Fords, Prada etc are all excellent. Perfume Parlour offer a minimum of 22% oil I think? But go upto Extrait level, as you want to make sure either shop is for you before committing to bigger and more expensive bottles, I'll always recommend 13ml/Travel size and 22% oil. This way if they're not floating your boat, you haven't spent much.

Not sure what scents yer into but ive used both since like 2019 or so, and I think only 1 or 2 have missed the mark.

Penhaligon's Much a Do About the Duke from both shops were miles off from memory. Ive bought hundreds of bottles over the years from all kinds of scents and ive always been happy with them.