I own many .25 ACP mouse guns, and without any doubt at all my Astra Cub is the most accurate of all my mouse guns. This is without question in my opinion having shot many of the .25 ACP guns, and I own probably ten of them.
The quality of Astra handguns is at least above average, especially if you are comparing them to guns made today with plastics and MIM parts. My Astra is reliable, and as I said, accurate, and I prize them both (One is .22 short).
An Astra Cub in perfect condition is worth $350.
Someone mentioned self defense shooting, was that your question? I wouldn't use it for that. I use my mouse guns for fun, and they are a lot of fun, especially the Astra, since it actually shoots where the sights say it should. I expect though that you want it for fun, as most people do, and for fun shooting a .25 ACP mouse gun can be as good as anything, especially if you reload.
I wish people wouldn't give advice about things they know nothing about!