I'm definately a big fan of Shopify myself. My one beer with them is that if you don't use Shopify payments they charge you a transaction fee on every order. This kind of goes against the entire reason most of us get off eBay and Amazon as we don't want to pay a third party for our own sales.

In my situation they won't allow me to use Shopify payments because I'm considered high risk, so I had to go get a high risk processor with whom I pay 7% fees and then Shopify wants to get me for another 2% or 2.5% per transaction. I finally wound up upgrading to the top tier Shopify plan as it dropped that to 0.5% per transaction.

I used to have a custom made Wordpress site and hated having to rely on my developers in India on opposite time zone to fix things when they went down or to make any change. I like how with Shopify I can set everything up myself, make changes myself. I can roll out affiliate programs and loyalty programs easy with apps, etc.