Probably my first sportbike, a 1989 Katana 600 in bright red.
It was the most fun because I had never had anything with that type of power and handling before but at the same time it wasn't a monster so I could mange it ok.
Fun little bike even if it did top out at 135 and felt like you were pushing a snowplow at that speed.
My first sport bike was a 1993 Katana 750. It was fun and one day in a vacant field accross from my house I found my self doing donuts on it and realized I needed to get rid of it because it no longer scared me. Good times