Audioengine makes great speakers, their A2s (what I have) sells for $200 and sounds great, I still prefer my custom in-ear-monitors($500) but I love these as they are small, good sounding, and looks GREAT with my setup.
If you want even better sound get their A5s at $350, I haven't tried them but many audiophiles on other forums regard them highly for their sound.
Audioengine sell wireless speaker adapters for their speakers, to satisfy your wireless needs.