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I bought the Merrell Current Glove from LLBean over the winter. They're very low profile, feel a lot like Vibram Five Fingers without the toe dividers. I like them quite a bit but haven't been in the water yet. It depends how you feel about a zero-drop sole, too.
These new ones from Astral look more like sneakers, I haven't tried them, but Astral makes good gear.
You will be much happier with high top water shoes, because little rocks aren't as likely to get into them. Also, if you happen to step into some knee deep gumbo mud, there's little chance you will lose a shoe; with the low cut shoes you might.
I have an NRs high top and they've been great. I would also suggest that you get an inexpensive boot dryer and use it. Otherwise your shoes are going to get pretty ripe.
Watch for sales at NRS and REI, etc. You shouldn't have to pay over about $40.
Two pairs o' cold wadda Chota Mukluks (one size fer no drysuit an' one size up fer drysuit); a pair o' NRS Workboots; a pair o' OTB boots fer warm wadda an' good drainage (jus' dun't step in any dawg poop wit dem); an' me newest... a set o' Keen Gorge shoes. Hi-top canvas sneakers fer goofin' off.
Anybody recolleck dem ol' L.L. Bean canvas "Canoe Shoes"? Ah' truly wish dem varmints up thaar in Freeport would make dem agin'.
Started with some salomon amphibious shoes, then keen taos, and now on the new ports, they are the best of the three.