This is a difficult choice to make at this point. If Foundry and Foundation were to remain in the same state they’re in, I would say Foundry. But Foundation 6 is right around the corner, and there are a number of changes coming in Foundry. At this point, I would listen to @teefers and have a look at Source. It would give you a good foundation (no pun intended) in Stacks, and you could wait to see how the whole Foundry/Foundation thing shakes out.
1 Like