Scitsu's are good - have them fitted to my T20 Suzuki and TZ350 race bikes - but they don't like vibration. When you buy one you get a strange aluminium mounting bracket that you must use, along with the rubber mounting strap things. They look a bit odd really when mounted correctly, but in a race fairing they look fine. On a road bike, this set-up would look a bit odd, but if you mount it like a normal tacho, it may stop working - they are quite fragile things. Some of my race-mates refuse to use them now and refer to them as shitsus!!