For my 88 year-old blind mom, I ordered an Alpha JX bidet seat, elongated. Want a new toilet, too. I'm going a little bit crazy w the choices. Rough-in doesn't matter, I have 16" from the back wall to the screws. Toto has models with an extra hole for electricity for a bidet seat (labeled with a T20 or T40?), but will the Alpha JX electrical fit through that hole, I don't know. I can't even narrow down the toilet choices with T20 or T40. Are there any Drake models with the T20 or T40 designation? I'm searching for a Toto, 1.28 gpf (E), Univ height (F). Tornado (C) is likely as good as or better than the max, but I don't know for sure, and the Cefiontect glaze (G) is fine, too. How do the Toto Drakes or Drake II models compare, and how do they compare with the Entrada models for reliability? To me, 1.0 gal or 1.28 gallon is not important, I just want it to flush and be clean (I like the large waterline, hopefully to catch the dropped logs), and be a reasonable cost (Not cheaping out here, just don't want to overdo it (Vespin II costs too much) since I already spent $$$ for the bidet. Thank you in advance. My family laughs at how I know too much about toilets. But I still need guidance here.