I like how it's easy-to use, very intuitive (even if you have no experience with smart retailer). It works pretty well as long as your shop has not more than 20 or so products in stock at any given time - otherwise there are some bugs/errors which make searching difficult sometimes! The integration process was also quite lengthy but we managed to get everything working eventually :) Also setting up multi store setups should work better because now most features don't seem available from different stores unless they're setup manually within each individual one separately. We've been running our eCommerce business since mid 2016 using only opencart 1.5 version before this upgrade all orders were stored locally by hand until then.