Evaluating Classical Music Albums


How do you evaluate classical music albums? 
First, what do you look for when you’re deciding which album to stream or buy? Is the conductor/orchestra more important, or is the record label? How important is the date of the recording?
Second, what do you listen for in an album that you already have to determine the quality of the recording? This can obviously be divided further into the musical quality and the sonic quality of the recording. What factors are important in evaluating these qualities?

Thanks for the advice. 
128x128saintsaens_op61
First off, I gotta say that the criteria you mention to earmark your decisions are pretty right on. But if you don’t know nuthin’, a good place to start is with record label, as the best labels usually have both the best ears and the financial reach to capture the most compelling artists in performance. London/Decca, DG and EMI Angel are all good places to begin your journey.
deciding which album to stream or buy
The performers of course! The rest is secondary (not that a good recording isn't welcome!)That said, edcyn above is right: traditionally, big companies have the means to capture the most compelling artists...

quality of the recording
Dynamics, the frequency extension, correct soundstage, clarity and timbre