I need to purchase a bigger planer because I am milling around 4 thousand bdft in my hobby business a year now, and I am hearing from veteran wood workers to try and stay away from the 4-post planers and Im not sure why, many companies have gone to a 4-post, and I have a hard time believing that a wedge planer is far superior. I'm looking to by a PM-15HH or the PM-209HH. your opinion would be greatly appreciated.