If you really want to get to the heart of pronunciation and grammar, I recommend Beginning Polish
by Schenker. It is a bit dated, but it has one of the most extensive pronunciation sections I've ever seen in a Polish textbook, and the grammar is pretty comprehensive as far as beginning textbooks get.
I've also have First Year Polish
by Swan, and Spoken World: Polish
by Living Language and would recommend them both. Spoken World: Polish
being on of the more up-to-date texts I have. Personally I didn't care for Colloquial Polish
, I thought their style of vocabulary and grammar presentation was haphazard.
I'd also say that one of the best grammars for Polish is A Grammar of Contemporary Polish
by Swan. It's even available online for free, so judge for yourself with this one:http://polish.slavic.pitt.edu/grammar.pdf
Though, I do like other grammars and grammar workbooks I've bought from Routledge, so I'm by no means knocking them.
EDIT: Here's the site the grammar came from, it also contains an up-to-date (free!) version of First-Year Polish, and other goodies:http://polish.slavic.pitt.edu/