You get what you pay for. Always.
I've gone through thousands of dollars in "inexpensive" systems, only to hate them after the initial excitement. Ever since completely re-doing my car in all high-end Alpine (not exotic by any means, just high quality stuff), I've been satisfied and have no urge to touch anything ever again.
I still remember my first setup. Cerwin Vega 12", Alpine 200rms monoblock, JVC MP3 deck. Spent probably $1200 or so, and didn't like it all within a few months. Since then I progressed through all sorts of crap trying to "save money" by not getting the best, and it ended up just being a waste.
Do it once, do it right.