Which speakers did you find bright, fatiguing or just disappointing in some way?

The Cabasse Farella 401 speakers hit on all cylinders when paired with a quality SE or PP tube amp but hook a SS amp up to them and they would drive you from the room. Bright, fatiguing and light in the bass although the bass was always tuneful. Even pairing them with the class A SE SS Pass Labs Aleph 3 was a huge step in mitigating their bright signature but they are a real Jekyll and Hyde speaker if there ever was one.

B&W 803 matrix, that was a good double mistake as i bought them having heard only 804 and not in my room. Before that a DIY project with Audax drive units.

G

Green Mount Audio Europa. Bright and fatiguing describes the perfectly.

In my home:

Focal (demo), Klipsch Palladium (owned), B+W Diamond Series (demo)

In someone else's home:

Tekton with the Be upgrade, Wilson with the Focal tweeters (no shocker, however I DO like the Wilsons with the new Soft Dome tweeter)

Demoed in multiple stores:

Paradigm Persona, the entire line-up.  The ONLY time I thought they sounded good was a pair of the 7's with McIntosh Electronics, using Vinyl as the source.

B&W 703s with Rotel front end. My first system. Upper mids shredded my ears and they had to be cranked to open the mids up.
Sadly I feel the current models have the same issue.