The thing to remember is that there are no bad tubes in those available from the well known makers. Their reputations have been earned by sales of hundreds or thousands of float tubes, and anglers comments, while subjective, will begin to show a pattern very quickly if any particular tube were to have a "problem."
I think it's fair to say that the recently introduced models are better than the older ones, and have been well tested by now in the waters we fish.
Any tube chosen from (in no particular order) FC4, SFC, Expedition, Bullet, ODC420, or their yearly amended versions will all do just fine and serve you well.
If you like to have a long service life from your gear try to get one with a urethane bladder system, but if you're moving up and on to fresh stuff every two-three years the lower cost vinyl bladders work well for many anglers and should be ok for a reduced cost.
You can also mention the place you plan to use it and see if there are any tubers already there who respond.
Hope this helps.
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