My first wrapper was a Kervneland (sp?) that wrapped individual square bales.  

• It was a big pain to wrap because the thing used lots of wrap.
• It required me to look backwards for hours, and was very, very slow.
• The bales didn't keep as well and the corners caused a lot of plastic to tear. 
• I had to use a bale squeeze to move them from the field and stack them.  
• The crop stubble would sometimes poke holes in the bottom when the machine dropped it on the ground.  
• When I stacked them more than two high the bales would fall over after they had cured and cooled down.  
• Feeding was a lot more difficult and required a lot more labor to dispose of all the wrap. 

Wrapping with the inline solved all of those problems.