Any comments on Viena Acoustics? The reviews note a bit of warmth in the upper midbass. Is this really audible? I expect to hear them soon and want any comments from owners or those that have checked them out. I know that some inaccuracies sound good in the short term, so how do these hold up in the long run? I will be comparing them to Revel F30 and Linn Espec. I currently use a Sunfire Cinema Grand amp, and a Casablanca pre/pro.