I'm looking to improve my home studio setup.
If you are intent on producing better recordings then I'd not sacrifice anything and go straight for powered studio monitors. It's like chalk and cheese compared to most surround sound systems.
I used Yamaha laptop speakers for a couple of years but I only use studio monitors now. I could not (or would not) believe a change of speakers would give me any improvement. I just couldn't envisage how they would help. I got a decent sound from my original set-up (despite size and cost) so I thought "what is the big deal?".
The big deal was that those speakers massaged the sound leading me to believe I had a decent track. When I first plugged-in my Mackie HR624s and listened to a piece I'd recently completed, I was shocked at how weak it sounded. I never heard those weaknesses before (except if i took a CD round to my friends house to listen to). I was fooling myself.
Don't be fooled - get studio monitors and listen to recommendations from other folk who have done the same.
I can use them for listening to regular CDs and music and there are many many occasions when I've done so and thought "what a sh*t mixing or mastering job done on this track".
They give you the power to improve your sound by telling you the truth about your sound.
Think about it - why would any surround sound speaker manufacturer (or hi-fi manufacturer) give you the audio straight as it is? They want you to buy their product so, if they have the tech, they'll massage any sound to make it is good thru their speakers as they can. Think about the market they are selling into and the type of folk buying it.