MC240 would be another good choice for La Scalas. At 105 dB @ 1 w / 1 m, most <100 watt tube amps work well with them. I'd suggest you avoid SS amps though; they can often sound harsh with such an efficient speaker.
Very loosely speaking, more power = more definition and depth even when you use only a fraction of it. You should research some of the threads here on the subject. There are a number of good ones, and many posters are far more knowledgeable about the whys and wherefores than I am.
Do remember that the single most important thing you can do is satisfy yourself at a budget you're comfortable with. Then you're free to concentrate on the music. Which is really what it's all about, isn't it?
Very loosely speaking, more power = more definition and depth even when you use only a fraction of it. You should research some of the threads here on the subject. There are a number of good ones, and many posters are far more knowledgeable about the whys and wherefores than I am.
Do remember that the single most important thing you can do is satisfy yourself at a budget you're comfortable with. Then you're free to concentrate on the music. Which is really what it's all about, isn't it?