I have a higher wattage GE portable microwave with a date sticker in it from June 2004 - it's in my workshop for re-heating coffee and whatnot. It's quality is fantastic, I hope they are still being made this well.
Conversely, I have a much pricier/sexier under cabinet mounted mic from Whirlpool that's only a year old and herks and jerks my food in a bumpy circle. Pitiful compared to the GE.
I have no knowledge of this particular item but I'd but another GE mic any day.