What do you like best?
HikaShop is a very easy extension to install. It's easy to configure, add products and images, and add to the main menu. Overall, HikaShop is super user-friendly, and you'll find it's easy to add products for sale on your website, even if you don't have a lot of programming or website experience. I have just started adding products and will roll out the finished shop next week!
What do you dislike?
It would be nice to create a category that allowed you to make sure all the products in that category included the same preferences, instead of having to set each one up separately. Otherwise this is a great extension.
Recommendations to others considering the product:
Just make sure you have all your product titles, product descriptions, the correct sized images, and prices ready to go when you start your shop. If you do that, you'll be able to implement your shop very quickly.
What problems are you solving with the product? What benefits have you realized?
With HikaShop, I just go to one area to create a Category, then to another area to create each product, add the descriptions, prices, and images, then add that category to my menu, and my shop is ready to go!