I don't "trust" a company, but Nintendo would be one that I would trust if I absolutely had to.
In terms of games they're almost always rock solid, with a few hiccups here and there. They understand that games should be fun first and foremost, and I can't not respect that in a day and age where "Games are art."
Their games work out of the box, with maybe some exceptions? They certainly haven't had any larger issues like other pubs and developers have had. I guess Federation Force is a problem, and if I had the new console or DS or whatever it's on I'd be miffed. But I never bought a Wii or Wii U. So I wasn't really hankering to get it.
Calling Prime a FPS is kind of a disservice. Yeah it's in first person, but it's not a shooter in the same vain as other shooters are. It's more of a first person puzzle platformer where the chief factor in interacting with the environment happens to be a gun. It's literally Super Metroid done in 3D, with a few things switched and added, right down to the remixed OST.
Right now my criticisms are are more to do with their tertiary practices, and not specifically the games. They treat youtubers like crap with draconian internet policies. Their amibo shit is starting to get shady from what I've been reading. Also they seem to be putting out new handhelds at a faster pace. Which is the main reason keeping me from getting a DS.