They are Chinese copies of MSD. I haven't heard of any problems with them and you usually hear when things are junk. If the actually are reliable, then they are potentially a good deal. My biggest concern with Chinese products is support. If there are problems, will you get help? Are consumables available, cap, rotor, etc. or will you have to get an entire new distributor when it comes time to replace those? If the latter, then it is not a good deal in the long run.
That said, I have heard of problems with the MSD ready to run distributors, which would be the direct comparison. There is, I think a pro billet which is better but it is not "ready to run" meaning that an external box is required, not optional.
I would go with rebuilt and if you want electronic ignition, get a conversion for it. I don't know that I would go with Cardone or any "off-the-shelf" rebuild, which is probably Cardone no matter the brand on the box, at the moment. They seem to have problems with the shaft length lately. Try to find a place that can actually perform a rebuild in house.
Lawrenceville, GA