I got a Calsci - about 2" longer than his stock one. Wrote a review of it elsewhere - search for other comments on each brand you are considering in the search box top right of this page. Liked it, and bought one for my V Strom. Short of trying several brands back to back on the same bike on the same day and course, its going to be a crap shoot picking one. Too many variables when you read other guys' reviews. I go for customer service, and while the guy at Calsci (Mike?) might be a character, I say that in a good way, I like him, have gotten good, and fast, service, and he will make custom variations (with or without vents, height changes, etc.). What else do you want. Look at his website and the info he has posted about oil and filters. No, this is not an earl thread.