I did a bunch of research, bought the Bowflex, and then regretted it bitterly. The Bowflex looks cool on paper but it has an incredibly delicate, complex, hard-to-understand, easy-to-break gear mechanism. And of course my Brokeflex broke the instant I took it out of the box and set it on the cradle. It bound permanently to the cradle, irrepairably. Fortunately even though Bowflex doesn't want you returning it (they have a big flier inside begging you not to), Amazon took it back without question.
I'm dead serious, go do a search for "Bowflex stuck" and you will see HUNDREDS of resources on how people's Bowflex dumbbells broke permanently. Oh, and their customer service is actually terrible just like all the reviews say. I couldn't reach them.
So I returned the Bowflex, did more research, and found that this brand, Rep, is literally the only brand of adjustable dumbbell on Amazon that doesn't have a bunch of reviews saying, "A weight fell off and broke my foot!" All of the other brands have reviews that say "For God's sake buy something safer!"
But this Rep set had suspiciously positive reviews. It didn't seem to have a lot of purchases, presumably because it's more expensive than the others. But I took the plunge and bought the set with the full 60-lb expansion, you can see it in the photo I took. Each dumbbell goes to 60lbs. And even though this is just a pair of adjustable dumbbells, there is a LOT to say about them, especially in comparison with the Bowflex.
First, the packaging: The Rep came in 4 manageable boxes of up to 30 pounds each. The Bowflex came in a single 102-pound box. This complicates everything from shipping to unpacking to returns. I like the Rep box design a lot better.
Second, the instructions: The Bowflex requires a PhD in their idiotic gearing mechanism. It requires lots of study — there are tons of warnings and things to learn. Do this, don't do that, or it will break. Blah blah. Not what I wanted to before working out. Whereas the Rep came with so few instructions that I was concerned at first, but it turns out to be so simple and easy that you don't NEED a bunch of instructions. I watched their company video one time, the one where they throw it off the roof of their corporate HQ, and their video taught me everything I needed to know. Frankly you can learn everything about using these weights in under a minute.
Next, the cradle: The Rep cradle design is *much* better than the Bowflex cradle. For one, the Bowflex dumbbells cannot work without their cradle. You could throw the Rep cradles away if you wanted; it's not required at all and it wouldn't matter. Compare to the Bowflex, which needs its plastic cradle for actually changing the weights. The Rep cradle is also lower profile, prettier, and significantly more durable (the Bowflex one felt cheap).
OK, and last, the actual dumbbells. They look and feel badass. Changing the weights is so fast that I was doing it as fast as the guy in the video within a few tries. You really can do it just as fast as the Bowflex, especially if you count the time needed to insert and remove them from the cradles. You're just flipping red switches; you can see them in the picture.
You can technically get it down to 2.5-lb increments on the weight, but you have to be OK with a very slight imbalance. You just take off one 2.5-lb adder weight (which takes 2 seconds, including setting it down). Because the 2.5lb weights are positioned near your hand, closer to the center of gravity, the imbalance is minimal.
The design of these Rep dumbbells is clean and simple. You can see just by looking at them how they work. Even an idiot like me can figure them out. The weights drop cleanly into their slots, which are V-shaped and forgiving. Everything fits together smoothly. The dumbbells don't rattle as you use them. The grip is comfortable. There are two extra smaller handles on each dumbbell for doing 2-hand exercises. And overall they look incredibly professional. They would be completely in place in an actual gym — these things can take a real pounding.
So glad I switched to the Reps. I'm already motivated to work out more. Good stuff.
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