[ddsmith]

I have not installed both so I can only comment on what went into my decision for an Old Air unit. I remember GMC Paul when he was deciding which unit to carry and he decided on Old Air unit because of several advantages. I think it came down to indiviual piece are replaceable in the Old Air unit but not in the Vintage Air unit and the position of the blower with relation to air flow path. The Vintage Air unit had to negotiate a 90 degree turn before exiting the unit and Old Air was a straight shot. I wish I could compare both myself but only have one truck with air. I like keeping the original control panel for use with the system and Old Air does that. Price was also an issue. The Old Air unit was $906 to my door with pretty much everything included. The instructions were a little lacking but there customer support was great by phone. I wouldn't recommend trying to get them by e-mail though.