Author's pick: Bowflex SelectTech 552 Dumbbells (2009 Model)

The Bowflex SelectTech 552 Dumbells are ideal if you live in an apartment or small house/living area and don't have much room.  These combine 15 sets of weights into one with their dial system where you turn the dials to change how much resistance is on each dumbell, ranging from 5 pounds to 52.5 pounds.  It adjusts in 2.5 pound increments, up to 25 pounds, so you can very gradually increase your lifting.

I really like the dial system of these weights. It's MUCH easier than pins or magnets or even resistance bands.  They can be used by anyone.  They also look great and don't wobble or clank much at all between the plates.  If you are trying to consolidate your workout time, they're also great for that because of how easy it is to change from one exercise to another - thanks to the dials.

Highly recommended.

Bowflex SelectTech 552 Dumbbells