My current speaker wires are cheap Acoustic Research. My next move will be some good speaker wires, then a better amplifier.Before changing any equipment, I'd advise experimenting with cabling in order to find out what your existing setup can really do. Cables can make or break the rig.
Upgrade AC cords, interconnects, speaker cables, & the way that they synergise with your componentry are, I suspect, the remedy for your disatisfaction.