@bgchiu - I've heard a good number of monitors - most of the Dynaudio line and several at different price levels from the major brands such as Mission, Elac, and Klipsch. A few high-end more exclusive brands at dealers that are impressive at first and then...maybe too much of a good thing? Also several professional powered speakers.
If you want a V-curve, that is not these speakers. They are basically flat, maybe a little mid-range centric. Very, very good tone. Very fast tweeter and woofer - resolution is excellent. Music that can congest a lesser speaker is well resolved on the Heritage Specials. Bass is fast; the speakers can give some punch when the track calls for it. Some music may sound a little thin and you wonder about the bass, then you hear it on the next track. This makes you realize some of the perceived bass on the previous track was perhaps slower woofers on your old speakers. Treble is not fatiguing - took at least 20 hours to break in though. These speakers are going to expose what is driving them - if there is harshness in the chain, that is going to come through. The flip side is that if by V-curve you mean you want to hear everything, these will do that without the typical penalty.
They are extremely addictive with the speed and tone - you just want to keep listening. Driver coherence is excellent as well. Really, it is the 'just one more song' addictive nature to these speakers that is special. I've had them long enough now to know this is not just novelty but are just really satisfying.
I just placed them in my big room system tonight - they've been in my office system. In the big room (20'x30') they play loud enough and imaging is great - and this without me playing much with placement. Just put them where my other speakers go and wow, it just works. Speakers disappear with the right track and soundstage extends beyond the speakers.
If you like Dynaudios, I suspect you will like these. For me they are perfect.