On the Club Aquanaut, here's a little test you might want to try. With the boat on the ground, go around to the stern and very slowly lift it while observing the bow. All of them that I have tried this on, bend right behind the cockpit. I asked a dealer about this and he said, "ya git what ya pay for." On the other hand they might be a very nice boat.
You asked for recommendations and at the risk of sounding like a broken record, here goes. NC Kayaks, or some of the Current Designs are going to be very hard to beat. If you want a boat that will simply spoil you for anything else, I would say you should go with an NC Expedition Lt. I have had mine for about three months and I now cannot imagine life without it.
The Expedition is not a play boat--it is for racking up serious miles on the water. It is all about efficiency, stability, comfort, speed and it's just plain good looking. You won't find a better built, or designed boat anywhere. They just happen to be on sale right now. Check them out at http://www.nckayaks.com.