You should map out your upgrade path in steps... Each step should measurably improve your sound... (that juice keeps you going in the hobby)
I would get the matching center to your B&Ws,
Then I would make a decision on your sub.... do you match your sub quality to your three front speakers... OR do you think of the sub as a once in 10 year purchase and stretch for a keeper sub... that will shortly match upgraded LR B and W speakers. (You could also make the same decision on your center... buy an upgrade BW center and eventually complement it with better LR mains)...
The rear speakers will be situational based on your room and how you would mount and position them.... and should match the front three giving you a solid 5.1 system... with a really tight base.
Your next move would be to consider your digital front end versus your power and processing in your receiver.
At that point, you can decide to add more features to your digital front end based on you interest in storing media on a media server, spin all kinds of discs etc.... Something like an Oppo player... or a DAC-Preamp etc...
Or, you could upgrade the receiver with a newer more powerful receiver or improve things even more with separate units. Pre/Pro's and multichannel amps.
You ultimately will want to match your speakers to your amps and the room and your tastes and budget.... based on how much two channel music you listen to versus how much home theater you play.
I would get the matching center to your B&Ws,
Then I would make a decision on your sub.... do you match your sub quality to your three front speakers... OR do you think of the sub as a once in 10 year purchase and stretch for a keeper sub... that will shortly match upgraded LR B and W speakers. (You could also make the same decision on your center... buy an upgrade BW center and eventually complement it with better LR mains)...
The rear speakers will be situational based on your room and how you would mount and position them.... and should match the front three giving you a solid 5.1 system... with a really tight base.
Your next move would be to consider your digital front end versus your power and processing in your receiver.
At that point, you can decide to add more features to your digital front end based on you interest in storing media on a media server, spin all kinds of discs etc.... Something like an Oppo player... or a DAC-Preamp etc...
Or, you could upgrade the receiver with a newer more powerful receiver or improve things even more with separate units. Pre/Pro's and multichannel amps.
You ultimately will want to match your speakers to your amps and the room and your tastes and budget.... based on how much two channel music you listen to versus how much home theater you play.