What weight range should I buy: 50 lb, 80 lb, or 90 lb+?

Specialist-community threads on r/homegym and r/GarageGym consistently warn beginners that they outgrow 50 lb pairs faster than expected on lower-body and rowing movements. If your budget can stretch to it, reviewers tend to recommend at least 80 lb per hand (NÜOBELL 80, Bowflex 1090, or PowerBlock with the Stage 2/3 expansion kit). 50 lb is fine for pressing-focused upper-body routines.