Thanks!
The M12II and the CX600M have about €3 price difference here in the Netherlands, haha. If you know any cheaper
modular PSUs send them my way please.
The fact that they have such a small price difference is precisely why the CX600M is a rip-off. It's a low-quality unit, only capable of its rated wattage up to an internal temperature of 30°C, and it has low-quality Chinese capacitors that are rated for only 85°C. The 520W SeaSonic M12II is much better: it can deliver its rated wattage up to an internal temperature of 50°C, and it has high-quality Japanese capacitors rated for 105°C. Both are modular, one is a good PSU, the other is a joke (at that price). If it were about 30 or 40
and if there's no way in hell you could afford any more than that, then it might be worth considering.
I sincerely and seriously recommend avoiding all of Corsair's CX series unless you find one at a ridiculously low price. The same goes for their VS series which is an even worse series of PSUs.
Corsair just aren't what they used to be.
I might want to get that Seasonic, but I'd rather not spend anymore money, I'm already near the budget.

Is the CX600M really that bad?
So yes, it's a rip-off. Corsair is just using the reputation they built up to enable them to get away with selling these crappy PSUs at prices that are higher than they should be for maximum profit. I'm tellin' ya, I'm really beginning to hate Corsair's PSU department. They should have quit while they were ahead.