The best thing about scaleops was that it helped us to train our models in an efficient way without compromising accuracy or quality of data for which we were paying them! I think there should be more options like this available, as well as better customer support system so they could help with any issues you might have during their work (eg - missing files etc).
We used some services where people do all your coding/training but what happens once everything goes wrong? No one can give good advice when something fails mid project. With scalepos i knew exactly who would look at my code if anything went awry later down line.