I've had or tuned Tweecer, PMS, QH, FAST, MS, and Holley EFI. Holley easily gets my vote. Not saying that the other systems won't do everything you need but when I weigh the things that are important to me, Holley wins. No experience with the Pro-M system.
I just bought another car that had been tuned with QH. Ran fine and made good power. No real driveability or starting issues. Drove it for 5 minutes after I got it home and then began the process of installing a Holley EFI system. I like their system that much but also know that I like to fix things that ain't broke.
'92 GT--YSI 2.95/8, Bennet Racing A4 347, TEA ported TW Heads, TFS-R Intake, TFS Stage 2 Cam, 65 TB, 72's, 3.55, C4, 275/60 MT DR's-Gone but not forgotten
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