haltech,autronic, are the main stream ones id look into. all around 2k.
ems,vipec,link,adaptronic,wolf. "can" be just as good but due to there low usage tuning can be abit hard to find.
microtech is good but from past experiances on there older models tuning resolution is abit poor. not sure on there newer "LT" models
motec is very good, but unless its a top of the line m800 etc etc tuning software is still dos based and the fact you have to "buy" options for them ontop of there already high price is abit of a turn off.
my pic of the bunch is autronic. very reliable and easy to tune. (ie: low cost of tuning)
id steer clear of a maf only ecu. (i say maf only because most of the above ecus can run a maf sensor aswell,) makes plumning easier and a map sensor is far better than a 20 year old air flow meter that maxes out and then is tuned by a good guess..
power fc is a great choice for plug and play, but autronic and haltech and motec do plug ecus. either in the stock case or use a patch loom.
cheeres.