There are a number of differences between Vitamix 5200 and 7500:
The Vitamix 7500
The pros: The 7500 offers a 2.2 output horsepower engine with 64oz of blending capacity in a shatter proof BPA free container. It has a tamper tool for easier blending from less prep and a 7 year warranty.
The cons: The wider design on the 7500s low profile container makes it slightly more difficult than it used to be to create smaller portions of your favorite blends. Its hard to know where to put the tamper.
Conclusion: You wont find a better quality of blend for smoothness, accuracy, or versatility on the market. The US made Vitamix can cook as easily as it can freeze, chop, grind coffee beans, blend, and juice with a single blade you’ll never need to change.
The Vitamix 5200
The pros: Vitamix’s 5200 has the same blending capacity and capabilities of the superior 7500, with the ability to cook and freeze and juice all in roughly the same amount of time. Guaranteed for five years.
The cons: This is an older design for the Vitamix, whose lineup is changing over to the lower profile models. Its taller, so it might not fit as well in your kitchen, and it is much louder than newer models.
Conclusion: I want to be clear about this: There is nothing the 7500 can make that the 5200 can not make. What you sacrifice when you buy this guy is only the height, noise level, and 2 years of warranty. The power is technically the same.
Looking for some more blender comparisions? Take a look at this article on the Vita Prep 3 Vs Vitamix 5200. Hope you enjoy it and it helps you in your decision.