I think it depends on your playing level. The higher your playing level the more you should lean towards the 'superior sounds' as great playing will always outweigh great features as far as the end performance is concerned. 'Features' are only operational conveniences and at best will only improve your performance marginally (a crappy sounding violin reached quickly by virtue of a 'great feature' is still going to sound like a crappy violin). A great sounding violin played by a good player is only going to enhance your performance.
Great features (in my opinion) are more important to the less proficient player in that they can spend more time developing their playing skills rather than having to learn archaic keyboard navigation skills. A Steinway D has very few 'features' other than a great keyboard feel and excellent tone qualities. It does, however, demand much of the player.
To me, the choice is easy. If you feel confident about your playing, by all means go for the better quality sounds. For me (and this is personal), I'm ALWAYS going to go for the better sounds regardless of what I think of my playing level. It's one of the reasons I love my Crumar SEVEN so much
. JMO though.
chas