Need a Recommendation for Classical Cello...

I think what you're looking for are probably some of the best cello concertos (cello with orchestra) or cello sonatas (cello with piano), not unaccompanied cello, because just about the only pieces for unaccompanied cello are the Bach suites that you don't seem to like. You're looking for something "haunting and melancholy," so I'd suggest you try the Dvorak and Elgar cello concertos. Both are among the greatest music written for the instrument, and have the qualities I think you're looking for. If this sounds interesting and you want to pursue it, I can recommend some specific CD performances of these works. (And don't worry about acoustic cello versus electric cello. In the world of classical music, there is no such animal as electric cello, thank God!)