I have been using Draftss for my team for the past two months. I have tried other design subscription services and was underwhelmed. My experience with Draftss could not be more different, this service is top notch and well worth the money. The biggest concern with these services is the quality of work - I was very impressed by the quality and it was better than expensive freelance designers and services I have used in the past.
The second concern with these services is how quickly they can execute - since you're paying by the month not by the project you get the best value if projects are done in a timely manner. Not only did the draftss team move quickly on all my stuff they even reminded me multiple times if I was the one holding up the project or if I wasn't utilizing the full capacity of the service. They make more money if I am slow or don't use my full service but they didn't care -- they wanted me to have the best experience/get my monies worth.
I usually don't write reviews for services unless I want to give a warning not to use but I felt this team/service earned me taking the time to write a five star review. If you're comparing a few of these design/code subscriptions then you have to give draftss a try, its the best one I have used and has been a major cost/time/life saver for my team.