Age old Argument!!!
You`ve asked a question that is an age old arguement amongst Editors and the answer is a simple one. If you have Premiere already, find a mate who has Final Cut and try it out. If you like what you see and can afford it then make the switch. Final Cut will do everything you want and more.
On the other hand if you are a Premiere user and already have a PC then it might be wise to invest in the new Production Studio and just upgrade your PC. I have seen people who swear blind by Final Cut and nothing else who have been shown the Production Studio and hvae had to take a step back as to just how powerful it is.
The choice is yours and ultimately you are the only one who can make it. Go with what you think is best and will suit your needs cos at the end of the day its your money that you are spending.
(On a personal level I have used Premiere since version 5 and it has done everything I`ve needed)
All I want to do with the rest of my life is Edit.