I haven’t gotten one for myself yet. I still just use the standard analog refractometer (which I highly recommend also). But if you’re looking for recommendations to go digital; I’d also say go for it!
Also... $75! Dang, after you get yours, post the link so we can get in on those sweet dealzzz! Lol
I have a standard red sea one also, I just thought I would feel more comfortable with a digital one. I actually found it on r2r, in great condition. The cheapest ive seen new was like $90 last month with the hot deals or whatever on r2r.