Does it make sense for me to upgrade to 802.11n?

My laptop is currently connected to the internet via a 802.11b/g router. The laptop is on the first floor of my house and the router is on the third floor.

I use Google Voice for business and when making or receiving calls from my laptop they usually break up a little bit. This is what I'm trying to fix.

I average between 5.85-5.9 mbps on speedtest.net and am on a 6.0bmps line.

My laptop has an 802.11n card in it so I am wondering if it is likely that I will see any improvement when adding a 802.11n router.

The new router would be added in addition to the existing 802.11b/g router so it would still have to be two floors up.

Since I am already maxing out my line speed, what advantages will upgrading have?

Thanks!

 

The main advantages are between machines on the network. One wireless machine to another in file transfers and other communication. I would expect newer routers to handle traffic and load sharing a little more efficiently if you have a good one but outside of that I wouldn't expect much a difference in any other use.

 

Basically none. You are maxing out your line which is way faster than needed for voice calls (that's unless you have terribly slow upload).
That's assuming you have a decent router- if it has slow CPU and/or not enough RAM it may not handle VoIP very well.
So what router do you have exactly?