Hi
I have a kohler cimerron (sp?) and a Toto (dont know the name of it, but its a 1-piece low profile tank), and I am satisfied with both. My only complaint with the kohler is it doesnt rinse well, but is no big deal for me, as I am a clean freak, and keep brushes and bleach in both baths. My only complaints (2 complaints really) with the toto is that a week after it was put in, I had to call back for a leak repair which flooded my floor (was told by the installer that he made a mistake assembling it...no charge for repair), and second is that none of the hardware stores seem to keep parts for it. If I had to choose between the two, I would have to flip a coin to decide. I have not been able to clog either of the 2, and my ex gf's children have not been able to clog either one (and they believe in using the tp!). Both look nice, and both seem to be built very well. I like the fill valve in the toto, which is fast and quiet, and have been told that it can be retro'd into an older toilet at my moms house, so am planning to do that for her soon. I dont know nothing about a map test, but I do know real world results, and I feel I made a great choice in both. For tech issues, there is a member here by the name of VaPlumber who installed both for me. Contact him, and he can tell you which toto I have.
Rob