You said...

"the ecu has to be able to tune ignition and fueling,this is why i am not getting the cheaper varients."

With all the ecus you have mentioned you can tune the ignition and fuelling but it seems you are implying that you cannot on the "cheaper ones"????

There are infact ecus that have certain self learning strategies but they are limited and still need alot of input fro the mapper.

You said

"didnt think there was an ecu that would tune itself apart from the fiesta rs turbo unit,adjusts the fuel itself for how much throttle."

Not sure why you think only a fiesta ecu would adjust fuelling based on throttle input? Pretty much all ecus can do this.

Hence my comment. Before you spend your hard earned you need to do some more homework so that you can make an educated choice with out being led by other people that might not know what they are talking about or just want to sell you thier product.