After 3 months of research, I concluded that TOTO and the American Standard Champion 4 toilets were the best bet. A friend was very happy with a new Toto but none were readily available in our area so I bought the Champion 4 at Lowe's for about $220 three or four years ago. It has never been clogged while the two Eljers in the house have been numerous times. I replaced one of them last July, 2013 with another Champion 4. So far, no clogs. The C-4 has a very quick and quiet flush through the 4" flush valve and leaves a clean bowl due to the very slick finish. I noticed the price on the same tall, elongated unit was $198 at Home Depot last week, Jan, 2014. I did have to replace the handle last summer as others have mentioned having to do.