Man, haven't even thought of Magnatones for years, and Ampeg fliptops with an 18 were 
great...they're still very popular in some upscale studios. In a moment of weakness, I traded mine years ago, and have been looking for one for a long time.
Sometimes, when I don't need an extension cabinet with the "little green monster", I use a hotspot monitor...just set it on top and point it towards me. 
Boy, this business has really changed over the years.
Russ