I have an Airport Extreme Base Station, a Linksys WRT54G (v2) and three Airport Expresses. It is actually a nice little setup for what I want to do. I know I will duplicate some of what was previously posted which was all very valuable.
The reasons I have two routers:
1. I want Wake-On-LAN and you can't do it without the AEBS.
2. I have more than three clients to hardwire in - the AEBS only accepts three clients, plus one WLAN connection. The Linksys can do four clients and one WLAN. This gives me, effectively, six clients (one of the Linksys client ports is used up connecting to the AEBS).
3. AEBS has Gigabit-Ethernet and 802.11n.
4. I put DD-WRT on the Linksys so I can see how much bandwidth I use and have greater insight into what is going on. Also, for VOIP it would allow me to do QoS, although I don't have it implemented. The Linksys has been up for 287 days without reset now. I don't know why it was reset back then, I think I put it on a UPS then. The AEBS just works, but I don't have a lot of flexibility with what is going on there. In truth, do you really need it?
The Linksys (circa 2003, so how is that for reliability!) is driving a VOIP connection, an iMac and netbook wirelessly, and the three wirelessly connected Airport Expresses. It also handles all the Internet traffic for all devices (both routers) that are on a 20 Mb connection.
The AEBS handles my computer and two AppleTVs via ethernet. Wirelessly it handles my iPhone and any 802.11n traffic. I want to add a "server" for Time Machine backups and iTunes serving, so I might have to bump one of the AppleTVs to the Linksys. I haven't tested whether that will still allow it to do WOL, but it should. The AppleTVs are only 100 Mb ethernet, so there is no real speed degradation there. Note that you cannot use the USB hard drive feature on the AEBS to support a Time Machine drive. At least officially as this is disabled in the most recent firmware.
In terms of speed, I have been able to get very good n-speeds from the AppleTV when placed inches from the AEBS. However, for a small sacrifice in speed, but tremendous increase in convenience and sustained performance, the wired connection gives me VERY close to 100 Mb sustained transfers from my Mac when syncing. If I get the server (which will be Gigabit Ethernet), I will be able to see how well it does on the higher levels of speed.
Side note on Airport Expresses - I use them exclusively the play music in different rooms. I have USB-powered speakers hooked up to them. They work great. Airport Expresses only have one Ethernet connection. That is usually for the connection to the cable modem, although it could also serve a client if the AE is connected wirelessly to a base station. The USB port on the AE CANNOT be used for a USB hard drive, only a printer. Since it has power to it, you can use it to power speakers, but you still have to connect the speakers to the mini-RCA connection.
You can usually get a refurbished AEBS for about $130 from the Apple Store. In fact, it is available right now.
If you wanted the benefits/features of the $179 AEBS they would be:
- Dual 802.11g/n
- Three Gigabit Ethernet Client and One WLAN port (most competitors have 4+1, so I don't think of this as a benefit myself)
- Pretty solid speed and transmitting capability based on reviews (not necessarily "best" but very close to the top)
- Seamless integration with Apple products (including WOL) as well as others, easy configuration
- USB printer and disk sharing
Two comparable routers from Newegg are probably the E2000 or the Netgear WNR3500L-100NAS (both on sale now for $78, normally $149):
- Dual 802.11g/n
- Four Gigabit Ethernet Client and One WLAN port
- DD-WRT firmware (Netgear only)
- USB printer and disk sharing (Netgear only - unsure how the disk sharing works on Macs)
I'd say the difference is the integration with Apple devices (including some custom features noted) and the ease of configuration. Some might say the quality of the Apple build would be considered very good - the AEBS does review quite well. The competitors seem to be coming down in price at the moment also. I have found that time is money and sometimes it is worth it to pay a little more to save you time later. I think with the AEBS you are basically guaranteed a plug-and-play experience with all your devices. No one will make such a guarantee with the others.
Hope this is helpful.