I guess no two brands of "flat" speakers sound the same. I have small Behris (MS16), A huge Samson, I have worked with KRKs, and recorded for 2 years in a studio that uses NS10s. They're all flat, and by that I mean, near to no-bias. But since they differ in size and many other factors, they are somehow "colored" by how they are made. Besides, your room will also be a huge factor. I once moved my DAW to the corner of the same room, and it sounded awful. Hence, I think the most important factor would be your preferences. Like what sir Kit said, "minsan, sanayan lang yan" goodluck!