Which first bike should I get?

Hi guys, I have just turned 25 and wanting to get my first (I know it’s quite late) but I have always wanted to get a bike but my parents never allowed me to, now that I have finally convinced him, I’m ready for it. My budget in around 2.5 lakhs (on road price) and I really liked Gixxer SF 250, but I have heard on Internet that their dealerships and service centre have pathetic services and also poor parts availability . I don’t want to get into any hassle that would backfire as it was really hard for me to convince my parents for it. I really liked it’s looks and want to get a bike like it. Also, I looked into Gixxer SF 155, and I’m confused in between two because of mileage. It’s like both are similar in looks and one has better mileage while other has better power. I don’t want to get KTM because of their chappri societal image, but man they are really good bikes in-terms of power. I have also looked into Honda CB300F but have also heard about their pathetic service centre experience and also it’s naked. Please help me should I get Gixxer sf 155 or Gixxer sf 250 or honda cb300f or any other like any other 300cc bike, etc. You’re help would be greatly appreciated. Thanks