The best place for a submersible motor is in the well. Upright position, constant temperature, surrounded by water. Laying on it's side in a barn, it can leak through the seal, temperature changes will cause expansion and contraction, fluid can evaporate through the skin of the motor. It only has to leak or evaporate a spoon full of fluid because when installed in the upright position, the bushing and seal at the top now have no cooling or lubrication, so it won't last very long. If I have a motor on the shelf for a couple of years, I will take it to a Franklin motor repair shop and have the fluid checked and date code updated before I install it. I have had 6" motors laying on the shelf for 4 or 5 years and they take about a cup of water to top them off before use. Wranglers, Rustlers, Renegades, Titans, Sand Handlers, J-Class, Aqua Duty, and so on are all plastic impeller pumps without a nickels worth of difference between them. There are lots of All Stainless Steel pumps out there that are different. Not that the SS pumps are any better because they now make the SS impellers so thin that the plastic ones may last longer. However, SS impellers are locked to the shaft (fixed stack) while most plastic impellers are not attached to the shaft (floating stack). Fixed stack impellers designs have less surfaces touching each other and have better horse power characteristics at the lower flow rates.