I’ve been riding for 40 plus years, I observe riders at the weekend working towards a higher qualification in riding and I’ve had my fair share of bikes over the years.
1: KTM they look good and probably ride well however they are well known for electrical problems and do break down.
2: Yamaha I haven’t ridden a Yamaha for many years, again new from the showroom or a low mileage 2nd hand purchase they breakdown, it depends on how much inconvenience your prepared to put up with.
3: Kawasaki other riders may have different opinions, I’ve ridden many a Kawasaki and never had any issues with the brand.
I own 3 x Honda & 3 x BMW all less than 2 years old, I keep them serviced and looked after, washed, dried & wiped down with ACF50 after every ride. You look after any bike and it will look after you!