Catholic Theology and Dogma collection

Council of Trent Catechism is still very relevant and is in fact footnoted often in the current Catechism of the Catholic Church, citing its authority as a prime source. Trent canons and decrees have a tone that's more harsh than the tone of Vatican II documents - Trent documents many times use a form such as "If anyone does x they are anathema", while Vatican II would explain what the Church teaches in a little friendlier way and leave the condemnation out.  I think much of that was a sign of the times though.  But a lot of Trent work is very important, accurate, authoritative, and well worth having.

Denzinger is good for its value to show where a teaching came from, and why the Church considers it Dogma, or doctrine, or whatever.  Today, most priests and professors I have seen use the Ott source book, it has an excellent way of explaining the types of teaching from the perspective of how the faithful should respond to it . Denzinger is usually a backup source to see a different explanation or information on a subject.  Ott is the best source I have seen to look up what kind of teaching something is, why the Church considers it so, and thereby to what degree must it be affirmed by the faithful.  Example, the Trinity will be explained as divinely revealed, sources will be given for that, and since this is the highest form of teaching (divinely revealed) it must be completely affirmed by the faithful.

Vatican I is also useful and authoritative, although like MJ I wish Vatican II was there as well (along with the current catechism).  Vatican I was short as it was interrupted by the Prussian War I believe; Vatican II actually was, in part, to complete the work of Vatican I, even though it was about 100 years later (Church time is like God time [;)]). 

The best thing to gain out of Vatican I was why the Church believes the pope, the bishop of Rome, is infallible. It also is the source to refute improper beliefs; for example, many believe the Church teaches that the Pope is infallible on everything, when in fact it teaches he is infallible only on issues of faith and morals, and only when he formally exercises this infallibility.  Reading the source corrects a lot of misconceptions. Vatican I is also important because IMHO the biggest issue fracturing Christian unity really comes down to authority; everybody has an authority for their faith, even if it is them self.  This document will give an excellent background on why the Church affirmed what it had always believed about infallibility (which is also important to read about, the Church didn't wake up one day and decide let's make the Pope infallible. It believes that it was always this way back to Peter, so it may prove interesting to read why it believes that).

Hunter's books are not used in the two seminaries I am familiar with as far as I know.  Given the date it was written , I suspect that it has been superseded with more recent theologians but is still very accurate given the author and publisher.

There are many great theologians who have written wonderful works.  Keep in mind however, that the Church considers none of their writings inerrant - all have written about things that at the time or later became known as false teaching. This is the nature of theologians, pushing the envelope, theorizing, analyzing, and some of it becomes accepted theology, some does not (example - Trinity is not in the Bible, it is a theology developed by Christian theologians over the first 400 years; same for grace). Even Augustine and Aquinas, two of the greatest Christian theologians and Doctors of the Church, had writings that today are considered incorrect and not consistent with Church teaching. There is an excellent document from Vatican Ii (Dei Verbum) which explains what the Church considers the protector of the deposit of faith if you are interested.

So Trent and Vatican II are of higher authoritative value than other theologians' writings if you are trying to learn.  To a person well-versed in Catholic teaching they can glean the gems out of any writings, and ignore the mistakes.

Hope that helps!