In case anyone is ever looking to see which states have reciprocity with Delaware, that information is available at the AG's website.
Currently we have reciprocity with Alaska, Arizona, Arkansas, Colorado, Florida, Kentucky, Maine, Michigan, Missouri, North Carolina, North Dakota, Ohio, Oklahoma, Tennessee, Texas, Utah and West Virginia.
We do not have reciprocity with Virginia anymore, so the easiest option for VA residents wanting to visit DE would be to get either an Arizona non-resident permit or a Maine permit. The Maine permit (PDF warning) is super easy to get. No fingerprints or photo needed even.
As of last month I now have a Maine Non-Resident permit and a Pennsylvania Non-Resident Permit.