You could buy the M3i Zero.
It's build quality is amazing, I never had any problems with it.
The Real Time Save works brilliantly, the menu's are quick and responsive, the support is very good.
It can play multimedia files with Moonshell perfectly, has cheat support, responsive menu's, ....
And it has Sakura, which is a big big plus.
Also, everything is upgradable, so if Nintendo releases a firmware that blocks your flashcard, the M3i Zero can just upgrade again, and the card will work again.
You can buy it from here for example:
http://www.colourful-zone.com/Store/produc...products_id=328
That's a great webshop, with great support and I've heard nothing but good things about it. They ship to every country in the world.