Hello,
A friend of mine has Newall on his mill & lathe. I have used them a few times and they work great and I found them easier to use than my DRO. That said, I put a Sino DRO on both my Lathe and mill for about 1/2 the price of his Newall Mill DRO. And for 99% of the home shop hobby stuff I do the Sino is all I need. The 1% the Sino will probably do as well, you just have to figure out the Chinglish manual a bit

I bought the Sino from eBay and it was shipped from China but was still at my door about 1.5 weeks after I sent it.
I have yet to calibrate the lathe DRO to make sure that the distance it says is really the distance it is BUT the DRO I added to my mill at minimum matched the dials out of the box so I am no worse off and I don't have to count revolutions any longer

No experience with the magnetic strip DROs.
The manual you linked to looks like the same topics for the Sino and some of the key presses I have used look the same though that one is better English than the Sino one
TTYL, jeff