I would say that by far Marco is my favorite drummer, Lang in second. Marco just has a fun personality and seems so natural when he plays. I think he could help make their next album something that I would really enjoy listening to.
Mike just seems dorky. His over-dramatic characteristics totally ruin any kind of actual emotion he might be trying to convey with the songs. I think he would fit perfectly with where the band is at currently, and that is to keep writing more technical and emotionless songs.