My experience, but limited...
We have an Oday 28 and just installed the CDI FF6. Like you, we sail with the family and don't relish having to go forward and change sails, albeit we are in a landlocked freshwater lake in the southeastern U.S. We also wanted to free up some space below decks. From a cost perspective, the CDI is significantly more affordable ($600 vs. $1,300+ USD). The installation was very easy (I did it with no help in about 2 hours). Other furlers seem to have a lot more parts/pieces, which I have taken to mean that there is more that could go wrong (I like simple). Other boats I've been on with other furlers (Hood, Harken), their drum's rotation seems to be smoother/easier, but I don't have the ball bearing fitting on my CDI. The BB fitting is supposed to make the drum rotation easier to start and smoother as it moves. It is also a feature which I can add later. We really like our CDI, but have had it for only 6 months. We have sailed a lot with it and have enjoyed the ease of manipulating our sail from the cockpit rather than having to go forward. I bought mine through D&R Marine. BTW, I also called CDI to get more information on their product line. The owner of the company answers the company phone, and was very generous with his time on the phone and knowledgeable of his product and his competition. For the luff tape on my 150 Genoa, I bought the tape from Sailrite (www.sailrite.com) and sewed it on with our home sewing machine. It's not a pretty job, but it's on and it works. www.sailcdi.com