They are all basically the same except for the level of detail. Basically, plan to work everything from locks to lights, all switches, appliances, entertainment stuff and ALL systems (do this on battery and also on shore power), and check the roof, ceiling, walls and floors. You definitely want one with greater detail.
You can find some here in the forum (search for checklist) or on the web. Here's one from our library. Forest River Forums - Downloads - PDI Checklist