Standard vs long bed

I'm looking to purchase a truck that will eventually be needed to pull a 5'er and would prefer to get a standard length bed (6'4") for reasons I won't go into here, but wanted the forum's opinion about this.

I know there are sliding type hitches available for this purpose, but basically I am curious about how reliable and easy to use the sliding type of 5th wheel hitches are and if people who have pulled 5'ers with standard bed trucks have had any problems related to the size of the bed.

Thanks!