Time Capsule
Pros - Allows both internal and USB-connected drive Time Machine backups for Leopard users; includes all AirPort Extreme features; archive option for simplified off-site backups; houses drive, power supply in one tidy case.
Cons - Can’t swap internal drive; Time Machine’s hourly backups are too often for networked system; storage capacity will be strained in multi-user environments.
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TimeCapsule results - nice
I just received my time capsule, plugged it in, scrounged around for a few minutes to enable stuff (what, read directions - no way!) and it is working great. Desktop system is direct ethernet connected and my work laptop is wireless connected. Initial backup through ethernet was < 1 hour (108 GB), laptop took 3-4 hours for ~ 35GB. Will be doing a separate Firewire drive full backup but only once a month. No delays (at least with the newest software) unlike what Lesa was reporting earlier.
As to the hourly backups, not a problem I believe even for someone who 'doesn't need' them. Time machine only backs up what has changed in that hour. So, as long as you disable super huge files that change constantly such as the Exchange database and Parallels Windows Disk images, only a few smaller files should backup at the most each hour for most people so it should be transparent. And for those times when I have been working to the point that my brain is on another planet and my hands permanently delete files (yes, Shawn, us hardworking mere mortals do stupid things like that :) ), Time Machine (even before I got the dedicated Time Capsule) has saved me big time.
Also found a new wireless setting that allowed the Airport connection to interface better behind my upstream switcher. Now my printer (off Time Capsule) and all my systems see each other 100% of the time - sure makes it easy sharing files no matter what room I am in. Nice.