Wirecutter

This traditional swing moves in two directions and has a rotating mobile and mirror, but it’s big and heavy.

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The smaller Graco Glider Lite LX is a compact rocking swing great for smaller spaces or anywhere where floor space is limited. We appreciate the deep, cozy cradle-like baby seat and 5-point harness and think the toy bar is just enough to keep little ones engaged without overstimulation when you are hoping for relaxation. Unlike a typical rocker, this option offers a smooth gliding motion, and babies in our tests enjoyed the experience with smiles and calmness all around. 
The timer setting on this rocker is not intuitive, so you'll be reading the manual more than once, especially if you don't use it often. Also, it only offers one path of motion, which some babies may not find inspiring. However, if you need a compact solution for rocking the good life and require more features than a basic rocker, then the Glider Lite should make it to your shortlist of options. 

The Graco Glider LX provides babies with comforting back-and-forth movement, a reclining seat, vibration, music, and sounds, and is considerably lighter and more compact than traditional baby swings. It’s also quieter than the other swings we tested.

The Graco Slim Spaces is a basic swing that hangs from an a-shaped frame and moves in a simple front-to-back motion. The battery-powered swing has a roller switch to turn it on and off and control the speed. Although some battery options we have used don't pack the same punch, we did not have that problem with this swing. We found the motion rigorous enough to calm our baby tester and keep them happy. The Slim Spaces is a lightweight product, and we love that it folds nearly flat, making it easier to move from room to room, store in the closet, or travel with the swing.
This bare-bones swing does the job, but it does not offer extra features like recline adjustment or soothing sounds. It has a simple mobile attached to the frame, but the basic design is not very eye-catching for babies, and it does not move when the swing is on. The seat is deep, but it sits at a relatively high incline. We think it may be better for babies with more head and neck control, as the infant insert is not very robust or supportive. The Graco Slim Spaces is a simple and affordable option for parents who need a safe space for their baby and don't want all the bells and whistles that come with other swings.

Baby Swing Comparison