Powerful, beautiful and keeps on getting better

I love the Mail editor. Once you get a good theme up and running you’ll be able to hand off newsletter creation to anyone who can drag and drop. Excellent stuff, almost nothing can go wrong. Even images get resized properly.
Then there’s the devs. They listen to you. You tell them you need something, or they could improve something, and they’ll either help out immediately, or put it on their to-do list.
Great people, great product and I highly recommend getting the pro license. It puts food on the table of these guys and ensures constant useful updates.