like everyone else i don't really read light novels but i have finished two: durarara!! (or what's available of it) and fate/zero (and what is available of all the other fate/spin-offs). i also read the first two toaru novels and tried to start baccano! i don't really have a favorite among them because they're all quite good and i would recommend them for anyone who wants to start reading light novels. they're fairly unique in terms of writing style and the way plot works is very interesting especially in drrr (finding out characters play a much larger role than introduced) and toaru (subverting its own plots). i'd only recommend f/z if you haven't seen the anime since the anime follows very closely to the novels.

but yeah generally i don't... really read them since they're not much available though i'd like to read more!