2012 Driver’s license made, first motorcycle is coming, Z750?

Hello! I’ve been driving a car for 10 years.. and I made the open driver’s license for the motorcycle last year! I only needed the obligatory hours and dare to say that I have never sat on a motorcycle before to drive quite well. At first I always wanted an R6, but now I’m off the trip, because I would like to ride a motorcycle and they should probably only be at home on the race track. That’s why I’m thinking between: Kawasa ki Z750 (Need ~500€) Kawasaki ER6N (Need ~5000Euro) Honda Hornet PC41 (Need ~400€) Suzuki GSR600 (Need ~400€) I’d love to have the Z750. However, I’m not sure if it’s a little too overpowered for me as an absolute newcomer? What can the experienced bikers say about it? In any case, I want a machine with ABS! Which is the best among the mentioned machines in terms of longevity and fun factor. Bin. in despair! Wait for your opinions