This week my "Sweet TEK" (pick of the week) was the not yet released Drafts 5 by Agile Tortoise.
I wish I could share more about this app, but it's still not ready for public release. I will say that if you are a fan of Drafts 4, you are in for a treat. Rather than go on and on about my passion for this application which permanently resides in my dock, by the way, let me point you to an interview I conducted with the developer a couple of weeks back.
I thoroughly enjoyed my conversation with Greg. I think you will too.