I can only go by my experiences of having an iPad when they first came out. I love watching films and TV shows on the 40min train journey to/from work.
The iPad: Had to be held or precariously balanced on my lap which then meant I needed to dip my head further down and strain my neck. 16GB memory held a surprisingly small amount so it needed to be regularly synced with iTunes.
MacBook Air: 256GB storage meant it held all my stuff, plays BBC iPlayer, ITV Player and 4OD (does the iPad do this now?), has a great design where the computer sits on my lap and the screen angles perfectly for watching - no hands needed! At the same time I could click over to MS Word/Excel to do some work and my video wouldn't stop playing.
I just don't really get tablets. My iPad lived in the toilet for most of it's like before I just gave it away. I might get the Nexus 7 but probably won't bother.
Yea the iPad has an app for all the catch up channels (bbc iplayer, 4od, itv player, 5 on demand and catch up TV, sky go etc). You can also get 128 GB versions now, so plenty of space to store things. I get what your saying about 10 inch tablets being bulky for travelling. I commute for 2 hours each way. The first tablet I bought was the galaxy tab 2 10.1 and it was horrible carting it about on the tube and trains. So I got rid of it and got a nexus 7, which was much better for carrying around, but for various reasons I didn't like it, I found the screen too small. Then I got an iPad mini which is just perfect for my commute. Then I found that when I was at home I wanted a bigger tablet for watching videos. I thought I'd go for an android tablet to have something different to the iPad and so I got the tab 2 again.
I usually buy cases with multi-angle stands in them so that I don't have to hold my tablets.
The Samsung tablets have multi-tasking abilities. The note 10.1 has the multi window function that allows you to run two apps at the same time, split screen. On my tab 2, I have a pop video so I can watch a video in a pop up window and do something else, like web browse, do work or whatever.
You sound just like my OH, who moans about tablets being pointless. He says his phone and a laptop are all he needs