Actually, I did do my research, and we bought the #1 recommended (Consumer Reports) low flush toilet. While it is an improvement over the older low flush toilet we had, it is still somewhat noisy, occasionally splashes, is smellier than a full-flush toilet, and requires more frequent cleaning.
Low-flush toilets are a stupid product. What many people do not know is that the toilet manufacturers were among those who supported the new standards. Just like GE and Sylvania who pushed for the new light bulbs, toilet manufacturers make more money from selling fancy, new-fangled low flush toilets than they do the old, simple ones. It’s all a crock, if you’ll pardon the expression. ;-)