I own a time capsule, and it works great for me, the old airport extreme is in some box around the house, Its very handy to have a lot of hard drive space
no downside at all, its basically the same mechanism and the hard drive in the time capsule does not interfere with the wireless aspect. I upgraded to the time capsule from an airport extreme and it works great.
Thanks alot you guys because, yea I was also under the impression that its the same device, but didnt know because of the added hardware, if there was any issues like less signal strength etc.
I've sort of been waiting for refurb airport extreme but based on the comments above I may just go ahead and grab one of the 500GB time capsules in the refurb store