I feel the biggest reward is the "Knowledge" that you gain from the post. Rewards are Momentary but the knowledge is enduring!!
Why do someone should expect a reward for meriting a quality post? You got the merits for posting quality posts and in return, you should merit other posts that are meritable. This will be a mutual reward.
I have come to realise this the best way to appreciate members in the forum and in turn making them to get up to the rank they so desire as time and years runs by. Which will pay up so dearly when it comes to handling of Bounty Campaign.