Tax now vs tax later — which wins at your income level and expected retirement tax rate
The Roth wins if your tax rate is the same in retirement as today (since you avoid RMDs and heirs benefit enormously). The Traditional wins if you're in a high tax bracket now and expect to be in a lower one in retirement. For most people under 40 or earning under $100k: Roth. For high earners in peak earning years expecting a lower retirement income: Traditional or a mix. When in doubt, diversify between both — future tax law uncertainty makes having both tax-free and tax-deferred buckets valuable.