Monkey DVD Box Sets Question.
 

I have been looking at the region 2 releases of the classic 70's show Monkey. I see that they released a 13 disc box set and also a newere version of 5 individual box sets. I was wondering what the differences were and which one to buy. The 13 disc set has me so far just by the nice design and the fact that its cheaper than buying the sperates. But i notice that the sperates have some extras on. Can anyone recommend which one for me. Cheers