We took a brief look at them. My wife didn't like the handles compared to the ones on the L-series, and she considers me the family gadgeteer and thinks I like the L-series disappearing controls. My observations were a bit more technical. Only the E-series upper oven has convection, and its door hinges appeared less beefy than those of the L-series. Frankly, the quoted price difference (which I don't recall) wasn't sufficient to sway us to the lower line. At least Wolf kept the pretty blue interior. Have you seen both at your local dealer or distributor?

We have one on our floor. It's a nice oven but for a relatively small price difference you lose the lower convection oven, the door damper hinging, the reotating control panel, and a less attractive handle.

The other difference I found from the Wolf web site is the window is a bit smaller on the E series. That being said, I just put one in my kitchen. I felt the more modern look matched everything else better than the LED panel look... and the rotating control, I have been told, has been a high failure rate item. As longs as the interior was still blue (my wife loves the blue) it was all good. I have not wired it in yet, so I can't tell you about performance... but I don't expect any less than the old series. I was told by Wolf that the single over had no less features or guts than the old series.

One other difference I forgot to mention was hydraulic door hinge damping on the L-series vs. "balanced door hinges" on the E-series. I'm not sure how significant that is.

We usually leave the rotating control panel in the "exposed" position, so I hope that extends its longevity. Please don't tell my wife, but I actually prefer the appearance of the E-series. And I can't imagine how often we will need TWO convection ovens simultaneously.

I'm not surprised the two series share guts. Otherwise the investment to do the E-series might have made introducing it a less-attractive business proposition.

The other main difference with the E series is they can be built-in with a totally flush look.