Do not buy a receiver. If you do, then at least don't waste money on good speakers. Anything connected to a receiver is just a waste. Only thing worse is multi-channel AV receivers. Its criminal they even sell those.
What you want for music is two speakers, an integrated amp, and a turntable or (if you're one of those) CD player. Connected with the best wire you can afford.
Whatever you do, don't go throwing money away on multi-channel. Look, think about it. Please. You already noticed you could hear a real difference going to better speakers. Well the same goes for the amp, the source, and the wires. Better costs more, and better sounds better. So you get 2 speakers, they are gonna sound better than any 5 you could buy for the same money. Ditto amp. Ditto wire.
Not to mention you don't have the room anyway. Stereo. Integrated. Only way to go.
What you want for music is two speakers, an integrated amp, and a turntable or (if you're one of those) CD player. Connected with the best wire you can afford.
Whatever you do, don't go throwing money away on multi-channel. Look, think about it. Please. You already noticed you could hear a real difference going to better speakers. Well the same goes for the amp, the source, and the wires. Better costs more, and better sounds better. So you get 2 speakers, they are gonna sound better than any 5 you could buy for the same money. Ditto amp. Ditto wire.
Not to mention you don't have the room anyway. Stereo. Integrated. Only way to go.