the old rounds for sure! perhaps because IM old, but more likely because they have worked throughout my long life, and too perfection..The rest just remake the wheel, A few wildcats have something to offer, but not counting them today..

25-35
30-30
30-06
270
250-3000
7x57
9.3x62
338 Win.
257 Roberts
300 H&H
375 H&H
404 Jefferys
450-400
And a few others, get the picture!

“Old” cartridges “work”, until you run out of twist and mag box. Which is essentially the reason behind most of it.