THANK YOU ONE AND ALL - Your replies are a real help and the suggested solutions are much appreciated - it's a kindness and thoughtfulness that one doesn't come across often.
I feel funny to admit this but there is no window solution. It would take an elaborate description to explain why but suffice it to say that there is no window solution.
An HEPA fan is a GREAT idea but unfortunately costs more than the roaster ) The scrubber would work but you wouldn't believe how small the sink and everything is - it's a no go
small batch sizes is the best solution
I would like to see for myself a GeneCafe or a Behmor in action, then I would not be making decisions in a vacuum.
Anyone live in NYC?
The Behmor, though not my first or second choice, has a small footprint, is quiet, has a smoke suppression unit and is dedicated to light roasts (where I roast almost all the time). Light roasts up to City+ seem pretty smoke free, which is good enough. The videos I have seen seem smokeless.
But then again the GC doesn't seem to produce that much smoke for the lighter roasts. The advice I was given about smoke issues and the real need for ventilation with the GC were suggested by a veteran roaster with a high degree of experience.
How do you purchase something you have never seen?
Air popping with my FreshRoast SR 500 produces good results. Why all this hand ringing --- I have a roaster
Bob Yellin and Jim Schulman - The Coffee Cuppers - both roast with elaborate air poppers
I'm in good company!
If I were at all handy I would build me a PID'd P1 but alas I'm a store bought out of the box kind of guy --