You will not have much luck finding a round front that is comfort height. There may be some, but round front bowls are not big sellers so not many are made. Your best performing toilets would be Totos. There are many designs and colors to choose from, but all perform well. If you go with American Standard, make very sure you examine them very carefully before taking them home. There are numerous manufacturing flaws that get on the market, especially at discount stores. By all means, avoid the Kohler line.