When buying a toilet by an unknown manufacturer, you are really rolling the dice. Eventually, every toilet will need new innards. Some manufacturers such as Kohler, make some of their toilets with parts that are only available from Kohler and at a price you can buy a whole new toilet. Often parts for unknown brands are special and when you need them, they are out of business. You also need to look at the trap size. Another point is to make sure the toilet sets level on the floor and that there are no visible flaws in the finish. Low flow toilets got off to a bad start years back because many manufactures just tried their old units with less water. Result was constant clogs and poor performance. Unfortunately, some manufacturers haven't done a very good job of improving their products. Toto is the largest manufacturer of toilets in the world. They are not found in discount stores, and they are not the cheapest toilet on the market. However, every model works extremely well, seldom if ever clogging. Some of their top designer models are extremely expensive, but other models are priced for us regular folks. The Toto Drake is their best seller. Consider that a toilet is used 24/7 by every person in the home and will last for many years, a few additional dollars now will be well worth it. You may have to search to find a Toto dealer, and maybe travel a ways to get to one.