I probably would go with a Infinity brand...thinking maybe they would match up the best.
Fry's has these bad boys on sale for only $99/each so I had to take advantage. Obviously I would need to upgrade my center channel as well so please give me suggestions for a compatible center speaker.
My current set up is:
TV: Panasonic TC-P55ST30
Receiver: Onkyo TX-NR609
Front speakers: Infinity P363
Rest of speakers from HTIB Onkyo htsr800 7.1 (next project is to upgrade center channel)
DVD: Oppo DV-980H
BluRay/Gaming console: Playstation 3
Gaming Console: Xbox360