I've been sticking to aluminum paddles because they're cheap enough that I won't freak out if my paddle gets lost or broken. I also like that they're heavier and give me a bit of a workout when I'm spending a day on a lake.
I've tried various brands and SeaSense absolutely wins in their class. I have the 84" and 96" models, both of which cost about $35 each. I've tried some other aluminum paddles, some costing twice as much, but they were either too heavy, too flimsy, or just shoddily made.
If you're not willing or ready to step up to a carbon fiber paddle, or just want a cheap-but-reliable spare, SeaSense would be worth considering.