Honestly, go bukkit/spout with multi worlds, and add in plugins (anti x-ray is included in spout, but if using bukkit, get NoCheat+ and Orebfuscator. Also, fun plugins, plus towny, and some other stuff you'd like yourself.).
Then you would have a multi world fun server, so you could have about 5 worlds (survival, creative, minigames, pvp, vip etc.).
Note: The plugins might bog down a server, so make sure to invest in a little more RAM and get a good processor in your server.
