Another vote for the iPad.
I've had a Galaxy Tab and a Sony Vaio something or other, as well as an iPad 2 (16gb wifi) and now an iPad 3 (32gb wifi & 3G) which I'm currently writing this post from.
Unlike the iPhone, the iPad actually feels as if it deserves it's hefty price tag. Ive actually sold my laptop now as there was nothing on it which I actually used that I can't use the iPad for. I realise that this is not the case for everyone but it certainly is for me.
I also have an iPhone now, purely because of the whole iCloud sharing and syncing facility which is absolutely fantasic. I take a LOT of pictures and it's so good to be able to take photos on my phone when I'm out and about, and have them sat there waiting for me on the iPad when I get home so that I can edit them and incorporate them into documents.
I'm not a fanboy (believe me!), and until I got the iPad I was using Android phones, which were great. However, for sheer ease of use, the iPad for me wins hands down.
I think the phrase "it just works" sums the iPad up. You get it out of the box, switch it on and it all works with the absolute minimum of setup. The battery lasts forever (currently on 96% after a full cycle charge last night, 1 hour of gaming since 7am this morning and lots and lots of web browsing), and the sheer versatility of the thing set it apart for me.
There are many, many brilliant Android tablets out there for a lot less cash, but as far as I'm concerned, the Apple is worth the extra outlay. Even more so now that the iPad 2 has come down in price.