Well AKAIO is a great firmware.
But i think there is gonna be another firmware (atleast i hope) to cover AKAIO.
And also M3 team have so many flashcards to provide kernels so i dont know if they are going to frequently support the kernel like they did before they got R4 flash cards...
Plus, you dont even know what AKAIO is (cuz u asked ppl what it is)
And without Akaio, acekard is still a good cart.
Also very cheap.
At least Acekard team is going to support your kernels a lot cuz they only have few flash cards to support.
Oh and it will take 2~3 days for you if you order it from realhotstuff.
so hurry up and make your order!!