No doubt they'll do the trick and are very tunable, but I just couldn't justify the cost difference.
I have seen guys fall short with the 42's, but have also seen them run incorrect fuel pumps, or other intake and supporting mods to back them.
Case in point....I originally had 36lb/injectors in my Cougar when I built it years ago and my tuner told me I was running out of fuel at 300rwhp!?!
That should have been my first clue that something was up, but I went with his advice anyway and upgraded to 42's. Wouldn't you know it....I was still having fuel issues.
Got rid of my stock air box and ran a large filter on the end and all was fine. Ditched the 255lph fuel pump for the high pressure unit and had more fuel than I knew what to do with.
Could have stuck with the smaller injector and just upgraded the pump and intake, but my tuner wanted to make money. Live and learn...$1,000 later.