What a list! Everyone has an opinion on all of those boats listed. The best thing is to paddle as many as you can so you can have your own opinion on these boats.
Dagger- Awesome boats! The Nomad rivals the Jefe as the best-selling creeker. However they havent been changed in the last eight or so years and they leak like sieves
Jackson- New, innovative designs and colors and lots of testing. However the bean bag seat is a poor excuse for good outfitting and the bulkheads do not have a true rigid main pillar. Also Jacksons boats are known to be top heavy
Liquid Logic- Awesome boats! The Remix is so fast and forgiving, the Jefe a creeking staple. However, the plastics on these boats does not seem to be as sturdy as others.
Pyranha-THE NEW BURN IS AWESOME!!! It is the predecessor to the H3 and is such a fun boat. Really fast, stable and easy to roll.
If you are in the Vail Valley, stop by Alpine Quest Sports. We have the the Hero, Villian, Nomad, Remix, Burn and Jefe in most all of the sizes offered for demo.