Business / E-learning Tracker - Please Offer Input

Hi guys,

So I'm looking for a tracker with a lot of non-fiction ebooks and business-related material. I am a finance guy so I'm primarily looking for finance textbooks and educational material. My thoughts are currently as follows:

TheVault - I know it offers a lot of business-related content, but I don't know if its textbook/ebook focused

BitMe - Consensus is that this is the best e-learning tracker, but I am a little concerned that I won't be able to maintain a good ratio (I've heard there are no FL, and its hard to seed)

Bibliotek - Will this have enough business-focused literature to satisfy my needs?

Any input would be greatly appreciated..