Linksys was being a bunch of shitheads to me, so I got a Netgear Dual Band router, and it's performance is pretty bad.
The first major problem is that the wireless connection stops working once or twice a day. I have to go to the router and turn it off, then on again to get a connection going. It's getting really frustrating for my family. My brother moved away, and soon I will be leaving to Air Force tech school, so I need to either permanently fix this or teach my family how to work a router's internal setting when I myself don't understand them fully.
The second problem is this. The two router connections that this router produces are NETGEAR and NETGEAR-5G. The 5G connection is horrible. The only device in the house that is Wireless N is my desktop's Netgear adapter. Everything else in the house is Wireless G. How do I make the most out of a Dual Band router?
If, however, your area is all a-crapped up with 2.4GHz garbage, 5GHz could get you out of some serious interference problems. Only 802.11a and 802.11n run on the 5GHz band, and I'm assuming you're not going to be regressing back to 802.11a. When running 802.11n, it's best to run it in a pure 5GHz environment as well, if possible.
As for your disconnect issues, it could be a lot of different things. If you've ruled out external interference or congestion on the channel that you're running on, you could have a firmware or hardware problem. You could try to update the firmware on your new router to the latest revision available from the manufacturer. If you continue to have issues after a firmware upgrade, or if an upgrade is not possible, you could try to exchange the router for another to see if the problem goes away. I'm not sure where you're at in terms of troubleshooting, so I'm not sure what you've done so far to identify the issue.
You also mentioned that your 5GHz connection is horrible. Since your desktop is the only one with an 802.11n adapter, any other device in the house will only be able to use 802.11a on the 5GHz band, assuming they support 802.11a. While 802.11a can support around 54Mbps, "real-world" you'll probably see about 20Mbps. You didn't define "horrible," though. I'm just assuming it's speed compared to 802.11g or 802.11n.
And to further add on to what minor incident said, I hear a lot of complaints about consumer-grade 5GHz routers. Feature-limited, quirky, random quality problems, etc. The enterprise side of 5GHz is doing much better, but you pay for it!
I have a Linksys E4200 myself, but I don't run in the 5GHz band because all of my wireless products don't support 802.11n at 5GHz (thanks, Apple!) except my work laptop, which I don't use often. So unfortunately, I can't offer a comparison for you there.
I might be tempted to just run G at 2.4ghz and turn off the 5ghz band and see if things work better.
I get 4 bars of connectivity and fast speed on the 2.4Ghz, and only two bars and slower speed on the 5Ghz on my router.
I just checked the firmware and it's up to date.
How far away from the router are you? Being a higher frequency... the 5GHz band has much lower range than 2.4 does.
Decided it wasn't worth my time, I returned it to Amazon, got a Cisco (Linksys) refurb single band N router for cheaper and have had hardly a problem since.
I KISS YOU!
I did buy a refurbished Cisco Linksys N Router....and it could not power on. I returned it and am about to order it again hoping it works this time.