Actually rendering in Foxit varies system-to-system. I've seen this in person on a few machines at work and had no idea how to solve it until recently. I do believe there's an addon to the new Foxit 2.0 that solves it however. I forget the name of it, but if you go to Updates (nice new feature of 2.0) it will show up in the list with a description that should seem relevant to the problem. Download and install and your text rendering quality should improve.
2.0 also includes basic form fill functionality, although it chokes on more complex and rule-based forms (more extensive embedded javascript; they're working on it). It also sadly doesn't work properly with OpenOffice exported fill-in PDF's, which is a cool function of OO, so I hope they can fix that soon.
- Oshyan