The Baldwin folks are very helpful. A phone call got me a full set of their books - product guide, cross-references, etc. Several pounds of books arrived about two weeks after the call.
I haven't seen a Hastings filter, but the Baldwins appear to be very well made - heavy duty is the phrase that they like to use, and they seem to live up to it.
Baldwin has two basic types of media - cellulose, and a glass-reinforced media. (That's a gross summary - Baldwin claims that they use 60 different media materials.) They make the latter available on some, but not all models. For example, the basic Ford FL1 (known as the B2 for Baldwin) comes in two versions - a standard, and a high performance version. Incidentaly, filter ratings (Beta, etc) aren't in the books I referenced, but are available from Baldwin, by fax for the cost of a phone call. What is in the books are dimensions, by-pass valve settings, whether there's a anti-drainback valve, and lots of other good stuff.