I haven't looked in a long time, but I thought the 120 was actually better function wise than the 240...can't remember why, but when we were considering it, that was our conclusion...

I had a 30" advantium 120 for many years, did not get one in the new house, and don't miss it.

I used it for regular microwave most of the time, and speedcook for crisping up frozen pizza and fish sticks about 15% of the time.

I bought a microwave with convect, about a third the price, works fine.

I have the GE 120 for 2 years.
After using it, I wished we got the more powerful 240.
After it stopped turning/rotating, looking back, I don't think we would get an Advantium again. It's a nice to have but very pricy for just a bit better than a MW w/ convect.

We also have a separate MW (in the pantry, set low for the kids).