I own a pair of ST3s which is Sapphires top of the line. They are my first pair of higher end speakers. For the money I feel they are a good buy. Real clear, plenty of definition. My only complaint is a minor one, sometimes I wish they had more oomph on the bottom end. I plan to add a good quality sub to remedy this. I would recommend a decent quality amp with decent power, my amp is capable of putting out 125w per channell, this seems to be sufficient. If I were rich I'd go with Sonus Fabers or Martin Logans but I'm not so I'll be happy with these.