Have you changed your mind about a brand? Was it you, or them?

Ok, being of German descent Lager beer is where its at for myself.
Windhook Lager is just jolly fine too - and of course all brewed to "German Reinheitsgebot" i.e. no 🌽 Mais, rice 🍚 , or any other unspeakable stuff added to replace barley malts. 
Amen. 

As for Audio... B&W is one brand I lost my 'emotional' connection to.
Gone from affordable floorstanders to way-out pricing and still no more tickling my sound bone.
The first Wilson Watt/Puppy I listened to during a 1996 audition in Germany.
I didn't 'connect' then - too hyped up a reproduction - a second higher version number of same construction, at my then home in Pretoria SA... terrible sounding bass performance, bad on my ears, and plain wrong to me. 
Though I till beleave Wilson creates some amazing newer items, though completely unaffordable for my liking AND my purse. 
So... disenchanting as well, overall. Maybe I was never enchanted in real-life, just by circumstances? But yeah, surely tickled by them fantastic reviews.
M. 🇿🇦 

I bought my first new headphone, after 25 years with Beyerdynamic Dt 990 indestructible headphone that my wife break with the aspirator, 8 years ago, Hifiman He 400 replace them; but they break themselves in 2 parts suddenly after 4 years of using them with care for no reason excess defective design....Paid a 300 hundred bucks at this time for a defective hyper hyped product....It gives me a first lesson.... Some other comes after....For sure i will never buy Hifiman products in the future.... Nor any too hyped new one..... :)

My wife remember that accident because that motivate my obsessive journey in audio audiophile experience for the good 7 years ago....I mange to do that without much money but with success....

My speakers and audio system is so good ( vintage speakers Mission Cyrus and amplifier Sansui AU 7700)now that i dont use any of my 7 headphones even the Stax models.... Good Speakers rightfully embed trash them all on all counts....

My best....

A remark: Contrary to the Hifiman experience, the Mission experience and the Sansui experience were so good i bought another model for each one of these brand with complete satisfaction....

I used to have a lot of respect for lower end B&W speakers; bought my dad some in the 1990s and they sounded nice with NAD gear.

On my recent outings to audition bookshelves, all the B&W speakers were over-bright to the point of aggressive harshness. I understand this was a choice on their part, perhaps?f

Totally agree on B&W, which is what I was going to post about.

Owned DM1800’s for a long, long time and thoroughly enjoyed them. Back then, I would have ranked them high in the pantheon of great British speaker makers.

More recently, auditioning much newer models, I thought them either mediocre or unlistenable.

I wonder if the reverse direction is less common: anyone dislike a brand and then later come around to them?

@twoleftears And I held them in *really* high esteem, so they have really fallen.

I like your question about the reverse. And one has to be careful with these questions, since there can be a gap between the lower line of a brand and their upper levels of product. So, can be an apples to oranges comparison mistake.

I will add one comment, namely, that I really thought Adcom was very mediocre, but I realized that of my two units -- a tuner/preamp and the amp -- that once I paired a really good tube preamp with the adcom power amp (535L), it sounded pretty darn good. In other words, the amp is still only mid-fi, but it has much greater potential paired with a good preamp than I previously thought.