Most of them seem to be Crawley (there's a free ebook of it on kindle too) but I'm looking at the Penguin Classics version translated by Warner.
What would you suggest? I'm not looking to study it in detail, so it's more ease of reading than anything.
Get the Kagan. I've read several translations, but now I just go to the Kagan if I'm hungry for Thucydides.
I recommend the Landmark Thucydides edition for its maps and other scholarly material. It uses the Crawley translation. Warner was a brilliant translator and a great writer in his own right, but I think Crawley is just a bit better for this text.