Fitrx SmartBell Adjustable Dumbbell vs Gymax Adjustable Weight Dumbbell Set 44 LBS

Buy the FitRx SmartBell if you want a single dumbbell that changes weight with one hand and stores its plates on a rack. It has a 4.4 rating from 5,400 owners; the Gymax set has a 2.1 from 39. The Gymax set is the more versatile shape: its 44 lb of plates convert between dumbbell, barbell and kettlebell modes. But the FitRx is the better-built, better-liked product for plain strength training.

• Choose the FitRx SmartBell if you want one-hand weight changes, a safety lock and a rack, and you trust a large body of owner ratings.
• Choose the Gymax set if you want plates that also build a barbell and a kettlebell, and you accept a small, poorly rated listing.