Exactly! why complicate everything just bring a supa and a change of heads make it sound like you want it to and be done with it .. 3 4 5 snares is nutz music today is so freekin complicated it is no longer fun, in the 60 and 70's recording was fun sometimes exhausting but fun, seems like the fun factor has been taken over by tech, tech tech....and bunches of drums, guitars etc...
Putting a snare up on a stand is tons easier than changing heads, especially if you're on the clock....plus, if everyone is in the zone and nailing takes, it's a vibe killer to get too retentive about the snares, etc.
Luckily, I have worked in the same few studios over the years, so I know which snares from my arsenal work best. If I have the luxury of pre-production, I can usually pick out a snare during that time.
I almost never go to a session without my 8x14 Slingerland 5-ply Magnum. It just has that "something". A close second is my early 50's solid-shell Radio King.
Others I'll bring: 6-1/2x14 Ludwig Hammered Bronze, 5x14 Black Beauty, the rest depends on the song. Sometimes, I'll grab a 12" snare just to have something different to go to. Ironically, I have rarely used a Supra, though I love them deeply!
Dan