Depends on what you want to do with your tablet. If you really, really need the full monty web experience, then Android tablets, give you flash, which will be the one thing you will miss with the Ipad. If you use Gmail for your email and calendar (my business requires me to use Gmail), the Android products integrate more seamlessly than the Ipad.
On the other hand, right now there is very little market penetration by Android 3.x products, so there are relatively few high-quality dedicated apps for the Xoom and its ilk (although they are coming for sure). But the market penetration of the iPad means that dedicated apps will likely come out first on that platform. So dedicated newspaper, emag, and specialty apps (e.g., MLB-TV for sports nuts, Foreflight for pilots, etc.) are already available for the iPad. Similar apps are just now being developed and released for the Xoom and Android tablets.
I own a Xoom, and would have probably gotten an iPad if they had supported flash, but since I visit many sites in my work or recreation that require flash, the iPad was not terribly useful for me. The Gmail and Calendar integration of the Xoom was also a bug plus for me, and I already use an Android phone.. YMMV.
All tablets are somewhat limited devices, but the hardware is improving. When the next generation Android tablets with the Kal-El quad core chips come out...these should be very powerful platforms for a variety of applications.
There is no right answer. Get the hardware that supports what you want to do. Neither a fanboy nor phandroid be.
Cheers.