I have a few of the rods you are looking at so I thought I would chime in. Please keep in mind that I am no professional. Just your weekend fisherman for the past 25 or so years. I have the following rods that I have used and can speak to (my impressions):
Dobyns Champion Extreme DX701 Light Fast
Dobyns Champion Extreme DX702 Med/Light Fast
Dobyns Champion Extreme DX703 Medium Fast
St. Croix Legend Xtreme LXS68MXF Med Ex Fast
St. Croix Legend Xtreme LXS70MLF Med/Light Fast
St. Croix Legend Xtreme LXS70MF Med Fast
St. Croix Legend Tournament Bass TBS68MXF Med Ex Fast
GLoomis IMX Mag-Lt 820S DSR Mag-Lt
*** Envy EBS71M Med Fast
One you didn't list but high end
Kistler Z-Bone LE LE-2MS-73 Med Fast
I have lower end rods, but from a sensitivity standpoint, these are my best. Of all of my rods, the Kistler is the most sensitive for me, but it is a $500 rod. After that, the Legend Xtreme would follow, and fairly close I feel (literally). I really like the Legend Xtreme rods. I think some people are put off by the handles, but I like them. They are comfortable and are really nice sticks. After that I would say the Dobyns Champion Extreme, then the Envy and the St. Croix Legend Tournament rods. Of all of my rods, the I like fishing the Dobyns the best. The main reason is the balance of the rod. I can use a lighter reel and make it balance well (i.e. I'm not tired at the end of the day). All of the St. Croix rods that I have fished are a bit more tip heavy. The Xtremes are better than the LTB by a ton, but still not as good as the Xtremes. I do hear good things about the new Elites but have not tried one. The Envy also balances very well with lighter reels. I have a few GLoomis IMX rods and they are nice, but they are older models and likely not as good as the new PRO models. I have been fishing the IMX line since the early 90's and have always been happy with them. I just didn't like the fact they sold off to Shimano so I moved on. Still great sticks with great warranties.
Just a few of my thoughts to throw in the mix. I do agree with most people that after $250, there are not huge jumps in performance. With that said, there are some great sticks above $250. Are they worth it? Only you can decide.
As for reels, I mainly use the Diawa Ballistic EX and Quantum Smoke. I also have a Pflueger President and Supreme XT for my wife and I would never buy another one. Both reels click when reeling and they don't have much time on the water. Moving forward, all of my reels will be Diawa.
Just an FYI, I am selling my Kistler Z-Bone LE LE-2MS-73 Med Fast rod. I will have it in the Flea Market later today.
Good luck with your quest!!