medyo OT lang.
anyway, it is my personal opinion that this present generation of computer musicians have been obsessing way too much about "realism", perhaps even giving more weight to it than having a great tone or sound. the past generations of music makers never had to worry about coming up with a "real" or "believeable" sound -- most, if not everything, was about what made the music better.
maybe that's why this generation makes too many remakes. they might be trying to bring back songs from a time when musicians obsessed on making a good song, arrangement, tone or mix, rather than worrying about whether their guitar sound sounded "like a real amp", or whether their plug-in "really sounded like a neve, or ssl, etc.", or whether their samples "sound like a real orchestra".
back in those days, good songwriting, good arranging, good mixing skills made good records.
personally, i'd use whatever helps the song... whether it means buying an ultra-expensive snare drum or getting a behringer mic (so what if it's not a neumann? haha) that most everybody can afford... i don't equate "real" with "good".
the mellotron was among the first to bring sampling to the recording world. did it sound "real"? hell, no. but it was a REAL instrument. why? a lot of good music have been made with it. now, there are even sample libraries that bring the classic sound of the mellotron to those who want it (and can afford it). well, that's also proof that there really is a big number of people obsessing about sounding "real".