It goes without saying that on a perfect system, sub bass would be heard the way it was meant to (meaning just like it would sound live). That would probably imply the use of subs. And if money and interior space was not an issue, again, who wouldn't use a sub or four? But if a certain manufacturer makes a certain midbass driver that successfully goes a bit into the sub bass region, why not give it a chance? In regards to cornering, my BMW does not come close to my 911 on a track. However, on the street, the BMW gives a good deal more than its competitors and would give most people (read: non-audiophiles) all the handling they could want (although the 911 gives the full, genuine handling experience - read: powerful sub bass). Plus, if the Dyns just don't do it, subs can always be added later (especially if one invests in a three or four channel amp up front).