I agree. I worked for a very big alternative energy wholesaler for a number of years as the head of the wind and pump departments. We sold lots of Shurflos, but mainly the direct submersible solar pumps, which were (relatively) cheap and very dependable - even if not exactly spectacular performers. Even thought there are "better" diaphragm pumps on the market,, you just can't beat em for price and dependability. BTW, I adapted the Shurflo pressure tank (if that's the right word for such a small vessel), which is made to connect directly to the newer style pumps, to a 10 year old model. Works great, but tends to promote more water usage.
Last winter I did not winterize my Foretravel. I used electric heaters inside all winter instead. It got bitter cold here over the winter. The only problem I found after the winter was over was the bottom of my water filter froze and broke leaking water onto the floor. Everything else survived. I replaced the vintage water filter system. Next winter I WILL winterize. Hard lesson I learned. I did winterize the Toyota and had no problems.