Knowing her she's not looking to spend a lot of money so quality/value would be the focus. This quest can be construed as contradictory. While I prefer Kohler over American Standard, there are other options. Rely on your local trusted Plumber to give you options for which one to purchase. There are many features that you will want to be aware of to make the best decision for your family. I would opt for a toilet with a 3" or greater (Douglas) Flapper Valve. I know the American Standard has a 4" but other companies have larger valves too. Do your own research and then call your trusted plumber for his recommendations. Measure from the wall to the current toilet closet bolts to see if it is a 12" rough. Can be 11" from the finish wall. Good luck.