I vote for the electric pump. Turn key on and let the electric pump work for about a minute or two. Starts every time without draining the battery from cranking the engine. Also, works as a safety device should your regular mechanical pump fail. Several years ago I was on my way to Knoxville from Pennsylvania. Mechanical pump failed about two hours from home. Switched the electric pump on and was able to drive until I located a parts store with a mechanical pump that had screws in the bottom so that I could rotate the mechanical pump to fit my location on the engine. Every car I build has an electric pump located back by the gas tank. Electric pumps work much better pushing gas, not puling!