We've been in this house 11+ years, and ever since I changed out the middle of the road Kohler toilets that came with the house with pressurized ones, I've forgotten where my plunger is. That happend about 7 years ago.
Alll the major toilet manufacturers make them, but some work better than others. They have a tank in the tank, and it pressurizes under normal house water pressure. A few years ago we were tiling a bathroom floor for a local dentist, and when the topic of installing a new toilet came up, his wife said to find the cheapest toilet possible, because, " you know what you use a toilet for...no sense spending much money for something you do that to." Needless to say, we were back in a week or so, installling something that worked. Moral of story...You pay what you get for.