I would agree with this. I would also agree with those who say badger or boar works well in both soaps and creams.
For good brushes, for boar I'd recommend Semogue or Omega. $10-$20 depending which one you choose, and all the brush you will technically ever need.
For badger, there are a ton out there. Most of the cheap badger is not worth looking at. If I were to recommend a minimum, I'd recommend either a Simpson Berkley in Best(about $50), or Vulfix 660S in Super Badger(about $45). They are a bit more than the boar, but they are quality badger brushes that will serve you well. There are other options, such as Whipped Dog for about $30. The Vintage Blades brushes have a good rep as well. But Simpson and Vulfix are time tested, hence my recommendation.
Stay away from $10-$15 Pure Badger brushes. I tend to like the cheap Pure Badgers, but I'm weird, and I learned on a decent brush first. For a beginner, I would not recommend them. MHO.