I guess it depends on what you want to do and how much experience you have. I have the Spider Pen Pro, Trantula and several Sorcery Shop ITRs. If just starting I'd go with the Iboss with wooly nylon (sold here for $15). I'd also by the 40'kevlar thread (sold here)to respool my ITR with when needed. Before spending the big bucks(price refills for the Tranatula and Spider Pen) I think I'd start in the cheap seats and see if it's ok for your needs.