I play a lot of harmonica- lots and lots in fact, and I always use Lee Oskars. When I started playing I got together a mixed collection of diffirent brands and types like you do, as I saw them. Some cheap and some - the keys I used the most expensive. After a while I realised that the Oskars suited me the best, and now I play nothing else. I like the feel of them, and the way they are slightly wider than the other main brand on the market. The minor keys are really good as they sound so different from any major key harmonica, which everybody uses to play music in a minor key. I currently have seven Lee Oskar minor keys in use, all naturals except the F# as this allowes me to play with guitarists who capo up on the second or third frets without any trouble. example: E minor becomes F#m or Gm. As a brand in general I love the Oskars, in fact my oldest is a 'G' and dates back to 1998 and is still in use! Cons of this product? I haven't found any yet.