High quality conversion from epub to pdf? Either online or Mac software.

I’ve tried several online conversion services (bizarre results from those, like words actually split in half—their tops on one page, their bottoms on the next).

The most highly-recommended Mac app seems to be Calibre, but I tried downloading directly from their site and one click got me 9 corrupted files.

Other Mac apps have mixed reviews.

Have you had success with anything recently? (Have you successfully downloaded Calibre, maybe from a third-party site?) Thanks!