The Stryper is pretty common. If you had the original pressing of Yellow & Black Attack, it's pretty rare. The true first pressing is catalog # E-1064. This particular pressing featured a slightly misprinted cover. The image on the cover was enlarged to the point where the "hand of God" is almost completely missing. The initials on Robert Sweet's rocket are also completely missing. This pressing also does not have a bar code on the back of it. The more common pressing has the corrected cover, a barcode on that back cover and is catalog # 71064-1. (The catalog numbers can be seen on the spine as well as on the label of the A-side of the record itself.)
The To Hell with the Devil angel cover is only rare on CD. The vinyl version is common and sells for around $10 - $15 on vinyl.
The Holy Right is probably the rarest. I've bid on that one on Ebay a few times. It will sell for around $50+ in good condition.
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ULTIMATUM - TOO METAL FOR WIKIPEDIA!