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

Well, that's not a good example of a brand you changed your mind about.  That's just a brand that didn't succeed.

Sorry I wasn't clear, I was actually trying to focus on audio related brands. :)

My first component system was Fisher, which back in the ’60s I thought was a really top brand.

I’ve been disappointed with Classe for not supporting legacy products when a tuner and an amp were unrepairable.

And I am still sore at Graham Engineering for never sending me an owner’s manual for the Phantom arm, tho I do like the arm.

I'm more a dark beer guy than a lager drinker, but Ma'a, a brewer based in my new home town of Hilo, brews an excellent enough lager to give my lager drinking a new lease on life.  It's good enough to stand comparison to the lagers I drank in Bavaria...though perhaps not as good as the lagers I drank in the Czech Republic.

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. 🇿🇦