Help me choose my Track Bike!!!

Hi Everyone, This is my first ever reddit post!​I'm currently looking at buying a trackbike for the 2019 season. I currently own a Ducati V4s, Aprilia RSV4 RF, and Speed Triple Rs for street use. I've taken these to the track but i'd rather get a bike i can ripe apart and get it as light a possible. I'm looking at buying either a new or slightly used bike to make it pure track. My list includes:-2018 Yamaha R1-2017 Honda CBR1000RR SP-Ducati 959-BMW S1000RR-Suzuki GSXR1000R-Triumph Daytona 675R​Reliability, ease of maintenance, and part availability is key...Money isn't a factor but i am aiming for about a 15k budget for bike, 5k for parts. What would you all suggest? via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/9gjd59/help_me_choose_my_track_bike/?utm_source=ifttt