Racjal...first off welcome to Discuss Cooking, ...I am not actually familiar with this brand Nu-Wave but by looking on google it is really just another convection, rotating type oven. The one thing to be aware of is that they do not always "brown" your meat to the desired degree as the cooking method is very moist. If you sear the roasts or what ever and then cook in your oven you will probably be happier with the finished product. Maybe someone has actually owned this brand and will be able to help you further. :D
Life is short...Eat dessert first!