Not sure if this helps you, but my experience with my AG Bluestar for the past 18 months has been wonderful. Cooks evenly, and the temperature is very consistent when checked with an oven thermometer.
I like the fact that there are no electronics with AG, except the oven light and the convection fan, which I don't even use as it is annoying ;)
I would think the Wolf AG should perform equally as well, and not let your Bert experience dissuade you from choosing AG..... Just my 2 cents

I have a Wolf AG. I had a brand new Viking AG previously and the oven was terrible. It could not hold an even temperature, the temp was off when tested with a thermometer, and baking was very uneven. The Wolf AG has not been a problem in that respect. Baking has been even, temps are consistent when checked with a thermometer, and I am very satisfied with the oven overall (no blue porcelain on the AG either). I also love the broiler on this oven and don't know how the electric broiler on the DF would compare. I have only used the convection feature once, while baking cookies. I actually think cookies bake better without it, and it seemed to blow crumbs about in the oven. My oven ignites easily, but they have changed the ignitor on the newer AG ovens so I can't honestly comment on that.

I agree with ctycdm, don't let the Berta experience dissuade you from AG. My ancient pre-remodel gas oven was good, too.

Thank you both very much for the input and sharing your experience with AG ranges.

Hi SoonerMagicMama - What did you choose? I'm just at that same point myself - and was actually considering a Berta as well - so would love to hear an update.

Be aware of the blue porcelain issues with the dual fuel that have been written about ad nauseum on this forum.

If you are going with Wolf AG, why not consider the Bluestar AG range.

Hello soonermagicmama. What did you end up purchasing? I am trying to decided the same.