Relative newbie question. I have an old Trek 730 multi-track and I'm wanting to swap out the old 3x7 grip shifters for thumb/triggers. Shimano Alivio is the original equipment. Should I go with new 3x7 shifters, like Shimano ef65, or should I get some old Alivio 3x7 triggers on ebay that are from the period of the bike? Purely for performance reasons, not trying to keep it original or anything like that. Thanks in advance