The majority of the Apps available for Ipad or Droid hold no interest to me. What I was looking for was a tablet that could allow me to do many of the things I currently use my notebook for. Things that were important to to me were as follows:
Software Side of things
Ability to use MS office file directly without conversion, preferably with software to do this already supplied not a additional purchase. But more specifically Excel PowerPoint and Word. Including the ability to update these documents.
Ability to interface with MS Exchange and RSA key management.
Ability to view any website in the world without issue.
Hardware side of things
USB port to expand storage options both connecting as a Hard Drive to a PC and being able to read a memory stick as a Hard Drive
SD and micro-SD card slots (like to keep my options open)
Blue tooth
Excellent Battery life
HDMI output
and of course wireless

As most can tell you the Ipad can do most of these things naively and they have developed workarounds for others. And the exchange interface with the Ipad is excellent. But as you can see there are some non-starters on this list also.
So which PAD did I choose the Lenovo Thinkpad Tablet, and trust me when I say it is not a less expensive alternative to the Ipad. If you are looking to save money this unit should not be on your list.
Therefore the answer is find out what things mean the most to you and base your decision on that.