That would be dependent on your budget. Is it $1000 or $10000
I think you can get away with favoring one component in a setup when you have a large budget by virtue that your other components are still going to be relatively nice anyways.
My 0.02 dollars.
"Relatively nice" is a slippery term.
While I'll have to make adjustments for my house, room size, etc. I was considering up to about 1K on a subwoofer [Hsu?] and up to 500 if I felt that I needed it on a mid-bass module [also Hsu].
That's up to 1500$ in my budget allowed for bass.
I'm thinking of having roughly a 2000$ budget for the rest of my speakers. The 2000$ will need to cover 6 side & 1 center speaker.
I'm thinking of getting a primary sub first. If for some reason I decide that I want a mid-bass module I'll get that a little later. I'll save up a while after that and get my other 7 speakers at once.
BTW: No HTiB for me ... I think that I can cobble together a better system on my own.
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As for the final budget numbers I'm a "best bang-for-your-buck" kind of guy so I'm willing to move up or down a little if it means that I'm getting decent quality and a lot for my $.