Shopify Theme vs Themeforest

Hey guys,

Just been playing around with Shopify recently. Wondering what's some of your guys experiences with shopify theme vs one from themeforest like porto or wokiee.

Seems to me the themes from themeforest come in with a lot more built in features than shopify's free theme and even paid ones. But my concern with them is compatibility or integration with Shopify Apps down the road.

What are your guys thoughts on this?