Well, this was the weekend of broken appliances! Need to replace built in microwave/hood. Interested in Advantium or convection oven as we both work and like idea of making roast/chicken/baked goods more quickly, but don't want to sacrifice taste. Understand Advantium comes in 120 or 240 voltage and convection oven wattage varies as well. Which would you recommend & why? We are trying to conserve cost yet maximize efficiency. TIA!