I guess it depends on what suits your needs best.  I think the Bill Sparks site is a little more direct, but now that you can type in either a key phrase or station call letters, it will give you every station that uses that key phrase, or has those call letters within its set of call letters.

And as I said, the correct site is:

www.billsparks.org

if you use the Com site, you will get an old time radio store.
Harvey