Mac Something lacks the overall sexiness of a Macintosh Apple store, but what is missing in decor is made up for in inventory. Any store devoted to Apple products is bound to be one filled with "oohs" and "aahs" from its customers as they peruse the shelves.
Mac Something also stocks products manufactured by other companies for mac products. They have some great accessories for the iPod, as well as a good selection of carrying cases.
It's a great store for your specialized taste. The only thing I would change if I could is their store layout and design. If you're selling Apple products, people expect a certain degree of sexiness and well-planned aesthetics to your store, and Mac Something just hasn't gotten there yet.