Need help buying a Flashcart

Hi. I need help buying a flashcart for my DSL , but not sure if its good. Here are some of the flashcarts which i plan to buy
-R4 DS
-Acekard 2
-N5 revolution(something like that)
-Galaxy Eagle i
-TTDS
However, I found out that there were fake versions of some of the above flashcarts. I need help to differentiate between the original and fake carts(if any), and of course which flashcart you recommend above? -need the cheap and reliable one.

I'd recommend Acekard 2i.

an acekard 2i for now if you want
or THIS
man i think it was love at first sight with this

Galaxy Eagle i,I have not heard before,so no idea.
M3 Team Products recommend,and ndsi flashcart should take into account,if you want to change to dsi one day,it also can work.
here lists one link for you: http://www.gamezway.com/acekard-2i-ak2-i-for-dsi-dsl_p103.html

Acekard 2i for sure.

acekard 2i or cyclods evolutionR4 and N5 are fakes.