Having had linksys since way back when and now having an AE. The set up was very straight forward on both brands.
The tab names are slightly different but other than that the set up is nearly identical.
the only reason I have the AE is fo the dual network capability.
Stock set up it has two completely seperate networks 10.0.0.X and 172.0.0.x. Plus you can elect to share across the networks or keep them isolated.
When my son has xbox/gaming parties they go on the 172 network.
the range of the WRT310, 410, 610 and the AE are pretty much the same. The WRT54G has the better antennas which affords me great signal strength everywhere in the horse hair plaster house. With the others there is one dead spot. Friends give me their old routers and I set up the security for friends and family's not familiar with the technology.
Printer set up/external hdd on the AE is extremely easy.
the AE is a very nice router with the features to back up the call for the extra cash. But it depends where your router is placed. My router is in the cellar but the printers are on the first and second floor. So networked printers are my solution. If you go that route look at HP, stay away from O'brother