Whats best to use to cut nails? Well first off all theirs a product called the Quik finder and it supposedly alerts you when you are close to the quik, but honestly this product doesn't work all that well I get many complaints about it. The first picture of the nail trimmer is the one you want to use it makes a clean cut on the nail and is easier to grip and get a good view of the nail. The Second one the guillotine is cheaper for a reason lol, it tends to break the nail which causes bleeding and is messy to stop, also you have to hold it at a weird angle.
So go with th regular nail trimmer.