Wall ovens??

My Gaggenau wall oven is not heating properly after 25 years of faithful service. I was told it would cost about $1000 to fix it, the repairman told me that I am better off getting a new oven. I bake & cook a lot, wondering what to replace it with. The repairman told me that he mostly works on Bosch, Gaggenau & Thermidor..he suggested I get an American oven at half the price. Does anyone know of a website that reviews wall ovens?