@ Rajathv8 : Thanks for you suggestions, will check them out soon.
@ Anwar : You are absolutely right. I am somewhat new to RC helis but i've been flying smaller electric helis for about 2 years now and wanted to upgrade to bigger helis. I understand that 50 or 90 are powerful mean machines compared to my smaller helis. This is why I am also looking for flying instructors, who'd be willing to teach me some moves. I am willing to pay for his time. I wanted to buy the 50 / 60 or 90 helis because buying smaller heli now means I will obviously want to buy bigger heli after maybe a year or two. So, i wanted to buy the bigger heli and stick with it once and for all. I am not intending to do extreme 3D moves. As for Sim, i am looking for G4 or G5.
Thanks for your suggestions too.