Nope. I am not that man
I have heard all those speakers although in different conditions. Some at shows and some at dealers.
The amplifiers are really nice and deserve good speakers. If you're considering higher-end models like the Fyne F8, you might want to look at amplifiers that are a step above in the product line. The F8 speakers are super revealing and need to be matched with the best. You'll hear everything through those speakers.
The F8 is a brilliant speaker, perfect for a mature listener. It takes classical, jazz, and classic rock to the next level and works well with electronic music too. It needs a great amp and matching cables, which is crucial. The Leben amplifier might work, but it's a good idea to do some research to ensure compatibility.
The Kudos 606 is another very revealing all-rounder speaker, just like all Kudos speakers. Due to its low sensitivity, it may not pair well with certain amplifiers.
The Kudos 505 offers similar qualities but with slightly lower bass output. However, it still delivers impressive bass. It needs an amp that is not overly bright but still revealing and capable of high power delivery. Using a small amp with any Kudos speaker may result in a sound that is a bit bright with weak bass.
Old tannoy speakers are nice too. Talk to a few tannoy nuts to make sure you buy only the best models. Fyne will outshine "SOME" of the tannoy models so tread with care.
The Qualio IQ is also a great all-rounder speaker, doing justice to various music genres. I liked the tone of this speaker, and offers more bass and overall frequency coverage compared to other speakers. Adequate space is necessary for the bass to load properly; otherwise, it may overpower the room.
Do consider Kerr Acoustic K300 MK3 and Proacs as well.