Alhamdulillah got a GS150 today.. Thanks to @vickytulla and @auto for their precious words of advice, brothers you really helped me. Special thanks to @vickytulla he always gave me accurate advice without bringing in his personal preferences.
Initial impressions - As bike is in running to RPM 3-4 tak hi rakh raha hun but man.... 4 tak hi itni uth jati ahi ye. Rode sprinter afterwards and SERIOUSLY noticed the power difference. Sprinter is much more controllable due to its small(relatively) size. I felt the same when i rode 70 after my Sprinter. MaShaAllah.. thanks again everyone who helped me in this decision
Will share my experience with the bike so it may help others make a decision.