readyloads, quickloads, polaroid holders
Dan,
I just purchased a readyload, after going through the web. My general conclusions are as follows (with a few exceptions, which I consider to be insignificant):
Polaroid holders do take Kodak and Fuji films, but they don't have backing plate and film flatness is an issue for some people. Quickloads seem to be the safest option, if you stick with Fuji Across (some people use them successfully with Kodak film, too). There is no complaints about them.
Kodak Readyloads come in several versions. Early ones were for two-sided packs and they were allegedly not good. They had shiny backing plate. (I am not sure, but I think there were even earlier versions without backing plate. ) There is an intermediate version for two-sided packs, with black backing plate. I have this one and it works well with the new (one-sided) Readyload film, as it does for most other users. The newest version is specifically designed for the new film, but some people report that some of these holders are bent (even though they get flat when inserted into the camera back). The readyloads tend to be cheaper than Quickloads, especially the older versions.
Joseph