Six of one half a dozen of the other.. I run both engines and I like them both. Biggest differences I notice are Inteks are heavier. They also seem to have more torque and are stronger engines. Vanguards wind up more and I think they are better on smaller tracks. Inteks are a dime a dozen as Vanguards are getting harder to come by. Both very simple to work on. Intek parts are easy to come by. Inteks seem to do more with less RPM.. Just my opinion and I am sure some will disagree.. Hope this helps