Sure, there is a point where you will not get the best out of a speaker but most folks cannot hear electronics as well as they think they can. A pair of $5000 stereo mains would sound great. They'd sound better on better electronics but it's a stretch for many to hear it.
And, it would be helpful to better understand what 'expensive' means in regards to a speaker budget, low end, and high end. Five speakers (including the two mains) and subs or more?
Other considerations: Primary use of system, TV or two-channel audio? Hopefully two (or more) good (not expensive) subwoofers as well.
I love movies but I'm an audio guy first. In your case I'd get better mains, a fair center and smaller surrounds plus two good inexpensive subs. I have the Elac Debut F5.2, center and B5.2 bookshelf surrounds for the smaller TV room (and an old REl sub). Elac is great for the money and there are a lot of other good economical mfrs these days, Golder Ear, PSB, etc.
And, it would be helpful to better understand what 'expensive' means in regards to a speaker budget, low end, and high end. Five speakers (including the two mains) and subs or more?
Other considerations: Primary use of system, TV or two-channel audio? Hopefully two (or more) good (not expensive) subwoofers as well.
I love movies but I'm an audio guy first. In your case I'd get better mains, a fair center and smaller surrounds plus two good inexpensive subs. I have the Elac Debut F5.2, center and B5.2 bookshelf surrounds for the smaller TV room (and an old REl sub). Elac is great for the money and there are a lot of other good economical mfrs these days, Golder Ear, PSB, etc.