You already named the main differences between the two CPU's in your post. Other than what you mentioned they are pretty much the same CPU. I would still get the 2500k even though you say you don't plan on overclocking. While you say that now sometime down the road you might decide you want to try overclocking especially since you can very easily get to 4.5 GHz with just good aftermarket air cooling.
I'll definitely consider it.