Fire or Tip?

At long last! The weather has been rather kinder today. It was still quite cold, but the sun shone and things dried out enough for me to get out in the garden of our new house. It is plain to see that the garden has been completely neglected for the best part of 2 years and everything has grown unhindered by any pruning or training. Hence, trees and shrubs are all growing into one another. I've had a god hack at the two big trees and removed all of the ground growth and many of the lower branches. I now have a huge stack of brushwood which needs to be disposed of. Either I need the goods trailer or an incinerator. My heart says fire is the way to go, but my head is not so sure.