Will a liter bike hider my progression?

Long story short, I need to buy a new track bike. Most of the ones within 500km of me for decent prices are liter bikes. Ive ridden a 600 for 3 years as I always felt it would make me a better rider. Its really tempting, but are liter bikes on relatively small tracks worth it?PS. literally every bike at the track I go to is a liter bike. via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/8wyv0v/will_a_liter_bike_hider_my_progression/?utm_source=ifttt