You know, I don't know if the brand was mentioned in the article. My guess is that the "new" magazine is just a new follower, and the reset stays the same GI lowest-bidder M16 mags. Maybe they are also getting away from the stainless steel springs, which don't rust, but do take a set when stored under tension too long. I've replaced all my GI springs with Wolff chrome-silicon extra-power ones.
You can't beat the H&K all-steel magazine in 5.56mm. It started out as part of their project to save the SA80, and is the Rolls Royce of bunch. In plastic, the Magpul pmag/emag seem good, along with the plastic Lancer. After that, there's the standard American-style 30 rd mag that should do well with the right spring and follower. Some are in steel, some in aluminum.
Interestingly enough, a Korean company is making respectable copies of MP5 and H&K SA80 magazines. They're also a US military supplier of M14 mags, along with the one remaining American company that makes them.
The really interesting is that there are now about three producers of the FNH 50-round mag for the P90, including this Korean company. The quality ranges from vey good to crap, but they've brought the price of the genuine FN mags from near $100 to about $40.