I'm looking to replace my 5" bosch RO sander, its just the basic HD model with 2.5" sanding stroke and makes my hand feel like its holding a live wire when I'm done with it. Anyways for someone who is a non-professional (IE make stuff for myself and family/friends) and doesn't typically make massive pieces of furniture would the /3 or /5 make more sense? I don't have the budget for more than one festool sander so I need this to handle everything, I work mostly with hardwood. thanks!