Hi Kathy,
I use the NuWave as do a lot of others who reborn dolls. I use the one shown in the link below, but I bought mine at Sears because that was where it was the cheapest at the time I bought it. Others use different ovens and they work well for them. I am very happy with my NuWave and have had no problems with it. If you get the NuWave, be very sure that you get the extension ring as it is necessary to prevent the doll parts from being too close to the heat source.
http://www.nuwaveoven.com/
Here is an article that might help.
The NuWave Oven vs. Halogen Ovens
http://www.nuwave-oven-reviews.com/article/the-nuwave-oven-vs-halogen-ovens/
I'm sure others will be jumping in with their comments as I know there are several types of ovens used. Read everything and get the one that you think will work best for you.
Hugs,
Beverley