Every reader but the Kindle supports PDF and most do it better than the Foxit while actually existing.
Look at the video here http://www.youtube.com/watch?v=DdPLe8TU57U he puts it into landscape mode (the only semi-readable mode on small screened readers) and it doesn't fit to width or even centre.
I've been debating putting in a deposit on the foxit, since it seems to be the simplest and most affordable. But since it is coming from a software company(albeit one with a good reputation) it is a gamble.
Another idea worth considering is making Eink based reader yourself. However, a development kit from E-ink is "only" $3,000, at that price one might as well buy all the Eink based readers on the market and dissasemble them.
Not the right price, but the PDF support is build right in. alt.binaries.e-book.technical will finally realise its promise.