What I like most about Judas is that they are one of the bands that had a wide variety of songs and, in a way, styles. There was/is a lot of music in the songs of Judas Priest. Everything flows into each other an the leads are nice little master pieces.
Many of the more extreme bands(like Slayer & MANY others) that were heavily influenced by them have become pretty "flat" as they have distilled their music & style into a functional minimalistic package.