Either a pair of A'Diva's by Anthony Gallo, and hook it up with a good quality amp, a NAD C320BEE is great, and not expensive, they are perfectly round 5" spheres with all stainless steel construction and very very good imaging, you may need an additional subwoofer.
OR, a pair of the BeoLab 4000's, though that can get expensive if you buy new, but they are self powered and in all anodized aluminum.
Either way, these both sets are way better than standard computer speakers which are very watered down, injection moulded plastic technologies from higher end equipments.