How about OEM Ford SEFI. Works fine in my combo, and the parts are available at Pep Boys and your local Ford dealer should you ever need them.
My combo is a supercharged big block deal running 83lb/hr injectors and capable of over 1000fwhp. It streets like a normal car. See also:
http://www.youtube.com/watch?v=17qAk_LIN8U
...and pictures in my gallery.
The old Mustang EEC-IV 5.0 SEFI stuff is very adaptable and will support 1000+hp. I've put it on Chevy's, big blocks, small blocks, even 4bangers. The tuning tools are readily available as well.
IMHO, bang/buck it's hard to beat. The only reason I could see to deviate from it is if you were dead-set against a mass-air meter.
Mass-Flow's stuff is OEM Ford EEC-IV by the way. The only notable difference is they jammed a MAF into the throttle body area (which is a bad place for laminar flow measurement) but is seems to work well enough. I can feel (and measure) some problems associated with that system due to the MAF location, but most people don't care...they just think it's the "mean behavior" of the engine. Ignoring the minor part-throttle fueling issues, that's a good system too...identical to OEM Ford, because that's what it is.
Byron