I haven't been on here in while and happen to run across your post. I have been in this dilemma for a bit myself now. I am waiting till I move to grab some new speakers. My beloved Klipsch ProMedia 2.1 just died on me after getting several years of use. I would totally reccomend this setup for anyone that wants a system in a box sorta deal. But after a lot of research I am interested in getting a seperate bookshelf style speaker setup and going with an external amp. FiiO makes a great little T-amp that I'll probably go with. I may or may not go with a subwoofer after I hear how this setup sounds. Overall though from everything I researched, it should sound pretty much amazing.
Check it out, and let me know what you think. I am curious what you end up doing