Tablet research - looking for input

I'm currently researching tablets.  I've narrowed it down to 5:

• Samsung Galaxy Note 10.1 (the one with the pen)
• Asus Transformer Infinity TF700 (the one with the nice [and expensive] docking station)
• Google Nexus 10 (the newest guy on the block)
• iPad (can't believe I just allowed an Apple product to appear in my blog!)
• Surface (with one of the keyboard covers)

I wish I knew someone that was unbiased between Android and iOS so I could get a real picture of what the advantages and disadvantages were...  At this point, however, I'm quite invested in the Google infrastructure (gmail, gcal, gdrive, gmaps, etc.) and it would take quite a shove to push me over into the Apple camp.

Surface is compelling in its own way, but it's SO new...  I get the whole argument that it's not the number of apps but the quality of the apps, but ... numbers count too!  For instance, I've moved away from Outlook years ago and don't want to go back -- on portable devices I am totally in love with PocketInformant.  And it doesn't exist on MS Surface RT yet...  No idea what else is out there, but that's the first thing I look for...

So (glossing a bit) that brings me to a choice between the pen and multi-tasking and the iffy screen (Galaxy Note), the nice docking station (Asus TF700), or the best and brightest with multi-user capability (a "big deal" in my book) (Nexus).

From a screen perspective the Asus, the Nexus, and the iPad are all roughly equal.  I've read reviews that "sell" one or the other (asus has higher nits, nexus has higher resolution, iPad has better color).  So let's just call that a toss-up.  Practically speaking if you don't have it right next to one of the other ones you're probably simply going to be wow'd.  (Practically speaking you probably have to have one of these 3 sitting next to the Samsung Galaxy Note to know that you're missing something screen-wise!)

IF I could just ignore the screen (I don't think I can - I think the screen rules out the Note) then it would become a question of...

• Note has a pen that would be very natural for taking notes.  I think this could be HUGE.  And it has that special capability of having split-screen apps (albeit a limited selection) which allows you to have multiple windows open and viewable at once.  This is where tablets MUST go as they move closer to blurring the lines with PCs.  No idea why nobody else has cottoned on to the split-screen multi-tasking yet.  And still that pen that I think would be SO useful...
• Asus has a great docking station which seems like it makes the tablet into a PC replacement in so many different ways.  Give me any of the dozens (?) of office suites available for Android and a keyboard and a trackball and I can do 98% of the work I do on my computer.  Yes, every once in a while I need something more, but it would mean my laptop would become a stationary object and the tablet would be what would move with me.  Add the fantastic battery life that comes with the docking station and you've got a real winner.
• And Google has a processor that is somewhat future-proofing the tablet.  It's also as close to vanilla Android as you get which I like a lot.  Add a BT keyboard (have you checked out the Jorno?  Just wish it was already available...) and you're almost in the same productivity camp as the Asus -- just don't have the trackpad and the extended battery life.  Of course it's so new that there aren't any real reviews of the real thing yet and I may be moving onto the "bleeding edge" of technology...  (i.e., the Asus Prime had big problems with wireless signal and GPS signal - fixed by the next iteration into the Infinity -- what might I be getting with the Nexus that will be fixed with the Nextus?  [ooh, that was a funny, that was!  Now it'll go viral, but you saw it first right here!])

So each one has compelling features.  Each one is a little more expensive than I'd like to spend (especially with that gold-plated Asus docking station -- why does a keyboard need to cost $150?!?!).  Probably (hopefully?) whichever one I get will be so great in contrast with a tiny phone screen that I won't look back.  But meanwhile I'm stuck with the decision...

Anybody with some comparison experience on these devices that can give some insight?