Is presale even a good thing? Last tour I got tickets in presale through MK.com for Amsterdam, I was placed in row 20, while others in regular sale were placed in rows in front of me. Tour before that I got tickets in row 6 in regular sale while presale ticket holders were behind me in row 15.
Presale is very tricky thing...
MK.com has reservation for, lets say, the first 20 rows in a venue. So the fact that you buy the tickets in MK.com doesn't means you have tickets in the better row, in row 1, for example. It depends in many factors, like how fast are you buying, for example.
Apart of this, sometimes the venues has agreements with other sellers or sponsors, like vodafone, amex etc, and the venue reserve the better rows (let´s say from 1 to 10) to that sponsors, some others (10-20 rows) to MK.com and the rest in general sale...
Or, some venues reserve just rows 10-20 to MK.com and the rest in general...
Every venue has its agreements with MK.com and other retailers and sometimes is difficult to know what to do. For example, 2013 tour, there were four presales for RAH at the same time, MK.com, ticketmaster, ticketline and RAH site, and each one had their owns seats reserved. I wanted seats at the stalls and it was difficult to find which of the four had that tickets!