Well, beyond the theory and rumour that most "advice" consists of, YES, its ok, I can totally deal with it, even on a daily driver, and ive driven i dunno, 4-5 cars running them, inc 1 current car.

You actually get slightly more UNDERSTEER rather than oversteer.

And generally you get more traction as the wheel with least risistance dont just light up like it does normally.

All it means is when you actually are oversteering its a whole lot more controlable as both wheels are spinning, so its not always trying to drag you back straight.

Frankly, if I had 800quid to spend, id not get a flash diff, id get it welded and spend the 750quid on smmat else.

Some people might not like it, but personally I prefer it.

Dont forget, if you get a proper plated diff it will clunk and knock like fuck when doing tight low speed manouvers etc etc too, infact you might not be able to tell much difference...