I have some of all of them. I like the 75 round drum - never had a feeding problem with it. Lots of the metal surplus ones. The tapcos are light, have those also. Depends if you want it lighter or meaner looking. The metals clipped together are wicked looking!
Not to be a smart @*% but the best one is the one that works best in your weapon. For my Romanian M&M M10-762, the two that work best with my AK are the
Tapco Intrafuse® “Smooth Side Low Drag” 30rd Magazine and the Promag 30 round double stack black polymer magazine. I've tried a few others, which will go unmentioned, but they were high quality high dollar mags and they just didnt fit right in my magwell, etc. I'm sure those same mags will fit well in other models.