Seydels are nice! But what you will find as you get going down the harmonica journey, is there are several to choose from. Most suggest what ever you choose , start with Key C.
You'll also want to stay clear of the 10 dollar harps. If you are serious, which I am sure you are. Shop around and spend 30 bucks and get a good middle of the road harp. Hohner SP 20, Seydel Blue Session, Lee Oshar can all be picked up for 30 bucks or less. Shop around, I personally like RockinRonsMusic4Less.com. But you have Coast to Coast, Musicians Friend and of coarse Jp Allen. There are others. Have fun!