Some advice needed

My current set-up is as follows:
JM Lab monitors, center and rears
James sub
Panny 50" TC-P50V10
Arcam AVR 200

I'm looking to make the move to a new, upgraded receiver. Can anybody recommend a decent one in the $1k-1.5k range? I know the argument of separates vs. single receiver runs deep, but in my budding audiophile experience I don't think I'm ready to appreciate the difference yet. Suggestions are welcomed!