By global settings (I wasn't annoyed by it until a few days ago), I mean change settings for ALL of the roms at once. I mean it is offered on pretty much any other cart. It annoyed me that soft reset was off for the games, and I wanted to switch them on. To my horror, you have to do it for each individual game. It wasn't all that painful since settings can be set pretty fast on M3 Sakura, but still... Individual settings such.
@mestapho: I have both, and the Supercard DS ONEi isn't a bad cart at all. As you said it runs flawlessly and it is a good cart. The reason why Supercard DS ONEi is considered inferior to M3i Zero is because of the speed of the firmware. You really have to have both to see the difference in speed. The Supercard DS ONEi is reasonable, but not fast, while M3i Zero is probably one of the fastest on the market. That kind of a comparison really shows itself when you have both.
Now also, you have 30 games on your cart. I'm assuming you are running a 2GB memory card or perhaps 4GB? The problem is when you move upward. A lot of users are beginning to embrace larger capacity cards as the prices are dropping. I mean in the past, most people were happy with 1GB, and 2GB was sort of the luxury memory card, now it seems that 8GB is the luxury while 2 and 4 are the common ones. When you have an 8GB card, you fill it to the brim, you can have over a hundred games on there. 30 games on the Supercard DS ONEi gives bearable speeds, 100, you'll see the firmware chugging. Even at 30 games, I doubt the speed of scrolling is smooth. It may be acceptable speed, but there are probably still minor chugs. At 100, you will literally STOP every 10 games or so and wait for it to load. And that's AFTER the speed update.
I'm glad you like your Supercard DS ONEi because it is a good cart that deserves a lot more respect. In terms of what it can do, the Supercard DS ONEi should be at the very top. But regardless, the M3i Zero is FAST. With hundreds of games on a memory card, it can still fly through the menu.