There are lots of opinions on that...
Let me share MY experience and then you will understand MY opinion.
I have had a PVC "******* pipe" intake, a mopar/k&n "filter on a stick" intake, a vararam "ram air" intake, and now a k&n drop in filter.
The ******* pipe and mopar/k&n gave the same performance- a slight loss of bottom end (felt while towing) and a slight gain during wot runs.
The vararam was a gain all the way around, low end to top end. The quality was a little cheesy, but it was a performer. There are some concerns when running in/near water with the low intake scoops.
Now I run a drop in. I have all of my lowend and no water worries, at least not any more than stock.
Although I have some performance mods, I am obviously not a track truck. I run 37s and I tow, so bottom end is king for me.
I am positive that one of the street guys will have a different impression of these intakes.