Hi Julien, and welcome to APUG.
Where approximately are you? Much of the advice about "better" enlargers depends a lot on your location.
Does either enlarger have a colour head? If it does, that is good, because it makes for ease of use when you wish to use variable contrast B & W materials.
Does either enlarger have a separate power supply with it? If so, that is good, because if one is required they can be a challenge to find used.