SM instruments are not physically modelled, they are samples.I'm sorry, but as someone who has spent >$1000 on SM instruments over the past 10 years, they're not comparable to the real thing. It's not the lack of a player, it's not the lack of room sound, it's the instrument. They've had 10 years to get better.
... I try to use them in production and end up just swapping the instrument with a sample library..
Same goes for my Model Brass library that I saw someone mention earlier in the thread.