I went with coax -- the logic being that if I ended up with too many coax digital cables I could use them as video cables, but if I ended up with too many optical cables all I could do is fix the turn signal remote indicators on the vintage Corvette I can't afford...

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8