Let me first say I haven't personally used any VMP products. However, I've seen them used by others and they have had great success with them. I'd I know a lot of the Termi and GT500 guys swap VMP blowers on thier cars. For example, they aren't as vulnerable to heat soak as an m90 IIRC. Plus they make more power.
2000 Mustang GT-Former giggle gas addict
1990 Mustang GT w/ Vortech V3
***resident gun idiot***