The reference point on the head is generally the Sennheisers .... most audio buffs go for the $150 and $250 price points.
For "PC Speakers", the most common "buff" selection w/o getting to crazy on price is the Logitech 5500's which can be found every 6 weeks or so on the Dell site for $220ish. Newegg is $350ish. Watch sites like dealtime, fatwallet fr notices as to whether the deal is on.
Thanks for the tips!
One other question has popped up; I'm currently using my MoBo's integrated audio (ALC888). Would I actually gain anything by buying a discrete sound-card, such as an Azuentech Forte?