I've been playing a vintage Mark VI alto (#61xxx) for 46 years. Last fall I purchased a new Guardala tenor, and I must admit that it's the best tenor I have ever played. So, I have been thinking about getting a fairly new alto. How do the B&S Codera (w/resoblades) altos sound and play? How rich is the sound? How is intonation? Do the resoblades ever become a problem?