[gesman]

From the developer's perspective Magento is a maze of spagetti nightmare.

The cost to maintain it, adding custom extensions and keep it up and running as a whole is way, way more than using off the shelf SaaS ecommerce solution.

[weaksauce]

Absolutely the worst maze of spaghetti files. To get anything done on one page you had to edit a few different deeply nested partial files. I hated working on it.

[aeno]

I assume you have never worked with xtCommerce... My first experience with eCommerce applications was xtC 3 and that thing really got me headaches...

[weaksauce]

At the time it was supposed to be the best eCommerce solution out there. Tried it and it was painfully slow to both develop for, to administer, and for the customer to use.