One of my favorites is the New American Standard. It also shows alternative renderings for certain words. Also if the study material is for research rather just reading, you might want to consider some CD-ROM versions that are typically cheaper and more powerful.
Spender, did you say you were in the Lewisberry area? Is that near Harrisburg? I used to live not too far from there.
"If you're going to get mad at me every time I do something stupid, then I guess I'll just have to stop doing stupid things." - H. Simpson