I have an
MA2 with the
SC. My
SC had to go in for repair (had a calibration issue and DJI replaced it under warranty...no trouble since!) and I got a standard controller from EBay to use in the meantime. It was prime flying season over the summer and I hated to lose a couple of weeks. So I have experience with both.
Using the standard controller was manageable with a sunshade and my Samsung Galaxy S7 phone. One time my phone did overhead and slowed down and caused the app to lag severely so I had to bring it and pack it up for the day.
Aside from the obvious differences, bright screen, quick setup, no overheating issues, I find the sticks to be much smoother on the
SC. I am at a point where I can do smooth orbits around moving objects manually. With the standard controller, I was really struggling. I figured I was having a bad day. When my replacement
SC came and I first tested it out, I immediately realized the issue wasn't me having a bad day, it was the smoother control I have with the sticks on the
SC.
I have had some laggy video on the FPV feed on occasion, but I fixed that by changing the feed from HD to Smooth. Smooth is more than enough. While flying, I can't tell the difference between the two anyway. I also turned off the video caching. I have no lag issues at all now. Interestingly enough, on my phone the map would lag...the map never lags on my
SC.
Regarding range, I could get maybe an extra 100-200m on my standard controller. Based on what I had read online, I expected my range would double with the standard controller...not even close. My range on my
SC is more than sufficient. Let's just say I can get to the very limit of my VLOS and still have full bars on my signal even if I am in an area with a bunch of trees.
The
SC may be "outdated tech", but it is good enough to run DJI Fly well...which is its job. The only other app I have on there is AirData so I can upload my flight data.
A big downside is it is expensive. I happened to get a great deal on a Fly More version with the
SC. If I had to purchase the
SC separately, the cost probably would have been a bridge too far.
I think the suggestion to wait for the new one that is coming out is sound, especially since you are getting an
A2S. A big downside with the
A2S and the
SC is the
SC only supports Occusync 2.0.