When bringing up those "old" MM cartridges we were half way into MONO; it's for sure we weren't heavy into "sound stage". My point is; these new MM and MI cartridges can produce a holographic sound stage, and from the reviews I read, are comparable to the MC's, but less expensive.
When you get into the MM's over 1K, you actually save money, because a cheaper phono will be quite sufficient, and the results might be better in some ways than the MC's.