@schratze Exactly! All these companies are not your friends, they are not live persons — they can't get offended, you don't need to be loyal, they've got to earn it if you choose them. Do your worst!
The only mistake you can make is choosing something worse if your favorite brand/company didn't give you the best product. Post poor reviews online, harass the customer service, but do not convince yourself that the product from their main competitor is better just out of spite — very poor strategy.