All my pasture fields are serviced by Ritchie drinkers. I have the tall double feeder ones on the right of the picture on the website. I've had these for years and they are superb. One thing I would say is make sure you lay a good concrete foundation for them. We sink a large plastic culvert down into the ground to about 6ft (vertically) and this houses all the electrical cables and water lines for each drinker. The culvert ends at the concrete and this is where the drinker attaches to everything.
We did build one with a wooden platform and it is not good as the wood moves with the temperatures and climates, so we will get rid of this eventually and do a concrete base on this one just like all the others.