Geez, if someone owned ONLY one brand of everything, I'd think less of them and label them "fanboy" (or "fangirl", as it were). My mom buys matching washer and driers, and matching kitchen appliances, but that's as far I've seen it get out of hand.

Companies usually design these things to be universal...
Just remember...no one brand is "king", no name synonymous with "best". But as Topspeed alluded too, there are a few companies that specialize, or get lucky and put out solid components. The trick is to find them.

And a word of advice...if you seen anything incorporating the letters "B", "O", "S", and "E" on the nameplate, grab your wallet tightly and run. Away. Far away. Or forever will it dominate your destiny.