I will give an alternate perspective,....
I can see the benefit of stepping up to higher quality (and price) offerings on bottom contact rods where sensitivity is a gain, though I DO believe the law of diminishing returns kicks in pretty quickly. For instance, I have Jigs and Texas Rigs set up on rods ranging from Zodius to Kistler Helium and Z Bone (with the NFC blanks) to Loomis IMX Pro and St Croix Legend X, Elite, and Extreme. All are very light, balanced and sensitive,..... But I don't see HUGE differences between the $200 Zodias and up thru the $400+ legends in performance. There may be differences, but they aren't drastic enough to REALLY justify the price differences. I mean the Legend Extreme isn't 3 times nicer than the Zodias!
When it comes to moving and reaction baits though.... That sensitivity becomes less of an issue to me. I want a light, balanced rod that does what it needs to do. I've got moving bait rods ranging from Dobyns Fury 705cb to various kinds and brands ranging from Dobyns, Daiwa, St Croix Mojo, to smaller companies like Doomsday Tackle, Bird Dog and Academy Ethos.
In regards to the jerkbait rod question from the OP... No way I would spend the $350 x $400 for the PA when lower level stuff like the Expride, Zodias, or others work just fine. If certain models of Exprides are flying off the shelves and the Adrenas are sitting on them,.... The market has spoken!
For the record,.... I am using a Kistler Jerkbait Special, A 6'9" Bird Dog Rod, and a 6'6" Academy Ethos HD rod for jerkbaits at the moment. I like the ($79) Academy Ethos! It works great with it's short butt handle and short length, it doesn't hit me in the stomach or slap the water,.., Not sure on the $180 Bird Dog yet, and just got the Kistler used at the ALF open house last weekend ($106). Love the feel of it! Looking forward to trying it out as soon as possible.
Just my experience and opinion!