There are zero signal-quality advantages to repeaters over additional access points. Their benefit comes in the increased ease of installation. Avoid using repeaters if you are able to install access points.
Repeaters are essentially a workaround. They are used to extend the range of a WiFi network where it is difficult to install additional access points with their own dedicated Ethernet connection back to the modem or switch.
Latency increases slightly every time the signal bounces off another repeater as it has to be received and then rebroadcast, which adds a few milliseconds at each repeater in the chain. Repeaters also have less bandwidth than additional access points. It is a less efficient solution all around.
A repeater further down the chain depends on upstream repeaters having good signal at all times. If any repeaters upstream are subject to WiFi interference or saturation of the repeater's bandwidth, a downstream repeater's signal will suffer. The same cannot be said for additional access points as they are hardwired into the router via Etherent. There is much less than can go wrong with an access point than a repeater and fewer potential points of failure.
Repeaters are, to varying degrees, slower and less reliable than access points, but are easier to install.
I would suggest a third option: Ethernet over power line WiFi extenders:
These are as easy to install as regular repeaters as they are simply plugged into a power outlet in your house (with one extra plug at your modem, to feed the internet into your home electrical lines); however, as the WiFi extenders receive their internet connection from the power lines in your house, they are usually significantly faster and more reliable than WiFi repeaters.
Think of these as a close cousin to the typical WiFi extenders that use Ethernet, just with a different type of hard-wired connection back to your router, rather than a type of WiFi repeater. The performance is technically slightly below that of Ethernet, but it doesn't require you to retrofit your house with Ethernet and offers significantly better performance than a WiFi repeater.