I’ve got one myself and they are very good. Pyrolytic ovens use extreme heat to oxidise dirt and grime into a powder form, which is simple to remove. The extra that you will pay for a pyrolytic oven is minimal compared to how much time you’ll save maintaining it.

There is also a new more energy efficient technology that you should consider. Ovens with Aqua clean (steam cycles) can be used to loosen grime, allowing easier manual removal. You simply pour water into a baking tray, select the ‘Aqua Clean’ option and let the 70°C steam soften the dirt on the oven walls. After approximately half an hour, wipe the surfaces down with a soft cloth (no cleaning agent required) and enjoy a clean oven again. Appliance manufacturer, Gorenje, has invested in this innovative technology.

Gaggenau’s single B0 270 oven has a pyrolytic function with the BS 270 combi-steam oven, which has a steam cleaning function, and 
a WS 261 six-placesetting warming drawer.