I've been trying for a Dracula's Tunic for freaking forever and can't get it to drop... I can solo Drac easy on hard with Soma, but no luck yet. Its one of the last items I need in the game.
This. Same here. I'm tired of using Death's Robe with Soma and Alucard. It's not a bad piece of equipment, but I've heard Drac's Tunic is better.
For Alucard, you'll probably want to farm 11 Hard the most for Yatsatsuna +1's and Murasame +1's (I think that's the name of it). Those are probably his best weapons. Mind you, Chapter 11 on Hard is no joke, but the rewards are good. You can also farm 11 on Normal for Thief Rings and an Ebisu Raiment to make your farming a bit easier. Also, 7 Hard will possibly drop Miser Rings, which will drastically increase your attack if you've got alot of gold.
For Shanoa, all Chapters help her a little. 7 can give you the Robe Docollette, 8 can give you Globus, 9 can give you Acerbatus, 10 can give you the Cerberus heads, and 11 can give you Lumanatio. It's hard to recommend a great setup with her, but that Robe is probably her best armor.
Hope that helps a little. See you online.