Antec, Corsair, XFX, Seasonic, PC Power and Cooling, Cougar, Enermax, OCZ, Xigmatek. Avoid Cooler Master, Thermaltake, Aywun and other cheap brands like they have a contagious disease. :lol:
Though there are high end cooler master power supplies that are pretty good, but those prices are way over 50 euros.
Here is a detailed list with power supplies rated, top tier is the best:
http://www.overclock.net/t/667515/reference-power-supply-tiers