I'd guess that based on price, there are far more sailors in here that purchase CDI rather than Schaefer products. Again, you seem to be focused on products that are primarily aimed at trailer sailers ... ease of assembly when you want to raise the mast quickly. I'll admit that the Snapfurl might be a good fit for your boat. It seems like your boat would be just at the high end of its intended range. I would verify the wire diameter and the forestay length very carefully. This is Schaefer's economy model, with plastic extrusion, one groove. Since you mention that you interchange with 2 head sails, I am assuming that you may have dropped out the CDI for that reason.
I've never been a big fan of shopping for products that just barely match my basic needs or desires so you can take my comments with that in mind. I suggest that a Harken MKIV Unit O or the similar Furlex (Selden) product are the better matches for your boat. These are the 2 that I would be most familiar with. I owned the Harken model mentioned, but I wouldn't hesitate to purchase a Selden for the same boat. Now I own a Schaefer 2100. It had its drum replaced but it is built like a tank and works flawlessly despite the age of the unit. It is an expensive product and I'm not sure I would replace it in kind.
Obviously the Harken and Selden products mentioned are more expensive than the Snapfurl but have more robust features (aluminum extrusions, etc.) These also have extrusions with 2 grooves, so that you don't have to make bald-headed sail changes. Racers think of those things and cruisers really don't care. They may be more complicated to install and perhaps ease of installation is a consideration foremost on your mind. Nobody likes to be saddled with yard bills and installing on your own may be something you are not very comfortable with. With sufficient care, you should be able to handle it.