They are OK - I buy them because they are cheaper than anything I would rather use. If I could get Fiocchis for 10-15 bucks over the NS I would buy them, Unfortunately, my club orders from a company that company that does not stock Fiocchis - and since they deliver on their truck to the club I have no hazmat or shipping costs, so the difference between them and a place that does stock Fiocchis approaches $70 per sleeve
The NS leave a brassy/copper residue on the primer feed tray; they sometimes are set too deep to work in the lower barrel of Brownings; otherwise they do OK