The biggest difference, and of EXTREME importance if you're installing it yourself, is that the Americast tub weighs about 110 lbs. vs. 350 lbs. for cast iron! I recently installed an Americast tub & I think it's great.
Summary: This impressive and accessible waterfall on the U.S/Canada border is the highest waterfall in Minnesota. Definitely worth a visit. The High Falls of the Pigeon River, also known as Pigeon Falls, is on the Minnesota/Ontario border, right off of Hwy 61. The Falls can be reached from Grand Portage State Park or Pigeon River Provincial park. On the Minnesota side it is a short walk to the falls on a pathed trail.
Written By: Thames River, river in southern Ontario, Canada. The Thames is 160 miles (260 km) long. It rises north-northwest of Woodstock, in the uplands between Lakes Huron and Erie, and flows southwest past the towns of Woodstock, London, and Chatham to Lake Saint Clair. The river is navigable below Chatham. Originally called the La Tranche River, it received its present name in 1792. The Battle of the Thames (1813) was fought at Moraviantown, near Chatham.