The way you cook is also key to deciding which type of range cooker to choose. No-frills heat storage ranges such as Agas retain heat they have gradually built up and generally have two ovens without temperature controls - the hot oven is for roasting and baking, the cool one for slow cooking/keeping warm.

Convection ovens allow you to bake more foods (cookies, muffins, etc.) at once with even browning, but without the need to shift and rotate pans. A convection oven is the same as a conventional oven except a fan is installed in the back interior of the oven. The fan is used to blow and force the heat to circulate in the oven and around the food, thus eliminating the need to rotate and shift pans. In reality, though, even with the most expensive convection ovens, you will still need to rotate your foods, because there will always exist still hot spots in the cavity, because the cavity is small. Don't compare home convection ovens with most commercial convection ovens used by bakers and small food manufacturers, because their commercial ovens are much larger than home ovens and commercial ovens don't have any hot spots and therefore, there's no need to shift and rotate pans.

Of course the market for bottled water is still massive, but you might be interested, even surprised to know that one of the largest growing sectors in water consumption at home is in the installation of water filter systems, that provide virtually unlimited quantities of pure water, straight from the mains, through a dedicated tap that provides water, pure and simple.