.....it is quite important to focus the attention on the last 1/3rd of the groove.
There is good evident reason for this: most climax in symphonic music is towards the last minutes of a movement and thus most likely situated towards the inner label. Very vulnerable to distortion and miss-tracking ...
That's what's all about...in the last 10 years I had so many discussions from owners who had problems with distortions, sharp "S" vocals in voices and some of them found their peace with Arms which have huge deficits in the reproduction of the full swing. I never had that, I never thought about that because I always had the right adjustments. Much later when I thought about "these" problems & listening to originals from the 50's+60's AND reading a lot of information how they were recorded, mastered, I knew, there are the differences. We also have differences in Tonearm Geometry, most Buyers think, when they pay for it, they get a perfect calculated and designed product. Some are really great and some are different in Performance from day to day. Anyway, it was necessary to think about a product which serves well for a majority of Audiophiles who are really interested in a better analog performance. Independent from price, a good alignment is also mandatory for a Rega RB250 as well as for Davinci user, when he wants to listen to old records which ARE the Golden Age of Analog. Listening to 80gr Records from 1995 won't show big differences, but when going back with the proper alignment and you will listen to LSC-Pines of Rome, you will hear what's the differences in Tonearm Design. It is a time jump into a recording session made lots of years ago. This is probably a better investment than swapping cartridges, which won't show us anything new (at the end of day).
More important is, we spend our time after working to "listen". Maybe one or the other will listen to his records and they will "tell" him something completely new...
Good sound (or analog Performance) is sometimes based on a very simple Principle: Knowledge about >>what is responsible for what<< and Precision.