I have the Tech 6's, they are very comfortable, and I didn't like the booties in the 8's IMO. I got them (tech 6’s) after my cousin's husband put his right foot into the spokes of his front wheel during a crash. The crash tore about half of the spokes out of the wheel, trashed the boot pretty good. His leg/foot was fine except for a sprained ankle! This was reason enough for me to get a pair.