If you want a comfort height toilet that looks very nice, makes everything go down reliably, and uses only 1.28 gallons of water per flush, I would look at the Toto Drake II, CST454CEFG. Check Terry's prices above to see what's fair; you should be able to find the toilet at a plumbing supply house for a price similar to Terry's. Just call around to several using the yellow pages. Some will be high and rude, and some will be offering a good price and be nice. Since you are Internet-savvy (you're here after all), plug in that model number in Google and you will see some pictures and features of the toilet from around the internet. It's one of Toto's most popular, because it works well.
If you like the modern-look one-piece in your Master Bath, check out the Toto Ultramax II, model MS604114CEFG. We have a similar version of that toilet in the Master, and love, love, love it. Flushes beautifully, looks great. Comfort-height. Double-cyclone flush (which shoots water as a jet from two horizontal openings, which helps clean the bowl better, and eliminates all the little holes under the rim to keep clean). CEFIONTECT glaze to make cleaning easier. (The Drake II also has all these features standard.) Also a 1.28 gallon per flush toilet.
Toto's one-pieces come with a seat, although any standard seat will fit. The two-piece toilets don't come with the seat; you can use any standard seat, but the Toto SS114 Slow-Close seat that comes on the Ultramax II is also sold separately and is a fan-favorite.
Toto also makes some snappy-looking toilets that perform well and are a little prettier. The Soiree is beautiful, MS964214CEFG and flushes beautifully.