I've never heard the M44 - I'm wondering if it has an "old fashioned" sound to it.
I am not exactly sure what you mean with old fashioned.
If you mean the 'vintage' kind of
tonality that a Shure M97xE 're-introduced' with much followed love/hate or the sound of an old Pickering V15/AC, then no.
The main thing with the M44/55 series is their lively and open character and if loaded right will give you a relatively flat response.
The most typical example of that is probably the M44-7.
It is not a coincidence that M44-7 is the most known example of the series and the one that Shure decided to re-introduce for DJ duty.
It packs a punchy sound, which extends well in both lows and highs and tracks surprisingly good.
Now, there are differences in tonality between styli.
Comparatively speaking, the more 'modern' sounding will be the M44-7/G/E and the more 'vintagey' will be the M44C and strangely the M55E.
The M55E is a lot more 'refined' and smooth than raw of course.
In any case, if you want to know what M44-7 will sound like you should try it with original stylus.
Best with a pre-DJ era stylus but I know that is hard to find today.
To give you a context though, a very similar sound to the M44-7 is that of the ubiquitous AT3600L.
Both are sharing a very similar tonality, a wide soundstage and both are pretty dynamic.
Shure wins over in punch and power of course due to its massive output.
At some point I intend to post a few recordings from all variants of the M44/55 family and also from an AT3600L for 'reference' since it is a cartridge that both audiophiles or not are probably familiar with. I just have to find the time to do it. Then you will be able to get a better idea of what they sound like.