Pheace: The Sims 3 -40% DLC -50% and Sim City 4 Deluxe -75% on Steam
aymerict: I'm thinking of getting Sim City 4, but is it as good as Sim City 2000 (which I'd like to see on GOG)?
Simcity 4 added in new things like regionalized budgeting where different parts of your city would have different budgets for raods, schools etc. It also automatically adds roads when making your residential, commercial and industrial plots. That feature is both good and bad since the roads automatically put in may not match the roads you've previously added. You now must terraform the area before making a city. No more pre-made landscapes.
There are some reports of graphical issues mostly with nvidia users but there are workarounds.