[Coco] Half off topic

[Robert Hermanek]

I have two computers I like to use, but would really like to have them 
share a monitor:  A coco 3 and a Tandy 1000 HX.

I have a Roy Justus converter for my coco3, meaning I can use a VGA 
monitor with that if I want to.  The Tandy 1000 has CGA output, and I 
have a CM-5 monitor that works perfectly.  But since I don't really have 
room for all of this junk (affectionate term) at one time, I'm trying to 
figure out which is easier:

a)  some kind of converter so that coco3 can share CM-5 monitor, or...
b)  some kind of converter so that tandy can share VGA monitor.

Thoughts?

Thanks
-RobertH