New to DMA and EFT cheats but am interested in Synthetic Skill

[baddad]

I've been scanning this and elite pvpers forums to understand how the DMA experience works. 

I found a few 35-100T DMA cards but am not sure if they are all compatible.

Also, once I purchase the card and subscribe to start with a 30-day cheat for EFT, is part of the deliverables a firmware file I update my DMA card with? Can someone please summarize what the process is to get up and running?

Any card recommendations would also be greatly appreciated.