Me, I'm a Google fan so the Galaxy Tab running Froyo (Android 2.2) is always going to be a winner unless you want to get seriously into iPad synthesizer aps (where it has a huge advantage currently). Ultimately, though, it comes down to deciding what you want it FOR. Games and sound aps? You'll need an iPad. eReading, techy geek stuff, reading news / Google integration? Gotta go with the Android.
If I go for iPad, Should I wait for iPad2. I heard its going to be lot better. BTW, I ll be using tablet for techy geek stuff, reading news and ocassional gaming.
I'm a fresh baked Galaxy Tab user. So far I've used it for browsing the intertubes and reading ebooks, and I must say it does both pretty well. However, I'd agree that some more screen estate wouldn't hurt, especially for PDF files that don't play well with text reflow (pretty much every book with formatted source code samples).
The screen difference is huge, but the iPad is still very portable at about the size of a notebook I'd carry around to write on anyways. If I learned anything about buying the regular Kindle over the Kindle DX, get the larger screen.
At least see what happens at CES in the next couple of weeks, I'd at least hold out for a gingerbread Android tablet.