Flat rocker switches are a better alternative to traditional toggle switches if you want them to have an aesthetically pleasing appearance. They are wider and less protruding than the traditional switch. Toggle switches have more color options like brown and black, while rocker switches are usually sold in white or cream color.
Regarding function and electrical connection, both switches are the same. However, a rocker switch requires less effort to operate, and it is quieter when you turn it on and off. Both types of switches turn on and off at opposing ends, and the cover plates fit on the same utility box. If you have an existing toggle switch and want to change it, this can be done quickly. Just make sure that the main power supply is turned off when doing so and then unscrew the switch. After that, connect the new switch to the existing number of wires. You can also get the services of an electrical professional if you don’t have the time and the expertise.
When it comes to cost, rocker switches are around 2 to 3 times more expensive than toggle switches. The extra dollar can be significant especially when you have many switches at home however it does create an upgraded appearance. If you are on a budget, the ideal thing to do is to install rocker switches where they are visible and use toggle switches in areas that don’t require beauty like a storage room. Since both function the same way, it won’t have any effect on your electrical bill. Labor cost for the installation of the switches should cost more or less the same.
In the end, the choice is up to you. Which is more important to you? Appearance or budget?