i'd suggest reading the threads i posted. if you're still not convinced the insignia's are a great deal (despite the brand name), then try posting on a real home audio forum.
i don't think you'll find many people supporting low/mid quality mass market items. especially 5 packs or small satellite speakers.
if you're going to be doing 100% movies you might want to jump straight to 5.1, but if you listen to at least about 25% music, i think you'll be better off with some decent bookshelf speakers (2ch) and then add more later.
two good bookshelf speakers will sound a lot better than some cheap 5.1 setup. i have a panasonic 5disc changer and it came with some little satellites. i upgraded the sub to a 12" 200w rca powered one. it does the job for movies, but on music the bookshelves are a million times better.
even the bass response sounds a lot better. mine are 6.5" speakers and have an f3 of about 38hz. for most music that will suffice. the sub helps the movie's low end, but is just too sloppy for any music besides rap.
