I use an Extrasport 75 footer in my creek boat and am very happy with it. I also have a Salamander waist pack with tow-rope feature and it has treated me well for years.
More so than brand, look for three features: Length, I prefer to have 75". Rope, pay the extra money for a Spectra rope, it's stronger, floats better, and last much longer. And stuff-sack size, look for one that stays loose and you don't have to force the last of the rope back into. I've cursed at plenty a bag when it was made to be so tight I couldn't get the remainder of the rope and knot back in...