Jon,
Thanks a lot for the response.
This is a Premiere project, but I tend to import to After Effects and export from there after fine tuning colour etc.
The project consists of CGI with green-screened footage, shot in PAL.
Are you saying that even if I go for the Alchemist route there will still be blending between frames either side of a cut?
The project is pretty complex, 250 odd clips all of which would need to be individually rerendered from 25 to 29.97, so a fair bit of work, although I would do it if it would give a better result than paying for Alchemist…