Bruce,
Ventile is the cream of the crop when it comes to cotton smocks. If you can afford it, then you should definately go for it. There's only about a zillion threads in the forum archives about Ventile, gawd knows I've probably started half of them!
But if your bank manager/wife won't let you shell out hundreds of dollars for one, you should consider an SAS Smock which is obviously English. Or, you can try a poly/cotton US Army smock. I noticed you're from the USA so the Army type garment might be just what you're looking for. They're fairly water resistant, and will dry much quicker than Ventile which is 100% cotton.
I can't find give you a URL for a seller because I'm just on the way out the door to head to work but I'm sure the next poster or so would be kind enought the throw a link your way.
Cheers,
Adam