CutePDF Write and CutePDF Pro
If you just want to create PDF's, then thoroughly recommend CutePDF Writer - installs as a printer and (over the years) has saved me a huge stack of paper (and laser toner as well) since I save things like bank remittance receipts as PDF's rather than hard copy.
Apart from Foxit, there's also a simple and straightforward PDF reader called Sumatra (which can also be run off a memory stick). Useful!
For editing and manipulating PDF's, CutePDF Professional is a damn sight cheaper and slimmer than full blown Adobe Acrobat. Useful little trick I use often with CutePDF Pro is the "Text Stamp" tool which enables me to stamp a downloaded reference document with the url of where I downloaded it from - very useful if you need to refer to the source of a document long after you actually downloaded it.
Another reason to try and avoid Adobe is that they have been rather slow to patch some of their security exposures in the not so distant past.