You're talking about the first SGN right?

If yes then it's a worthy upgrade.

Are you using Galaxy S 1 I9000 or Galaxy S 2 I9100?

If you're from Galaxy S 2, then you won't feel any differences with Galaxy Note 1 N7000, except that you'll have a bigger screen & the S Pen function. You might want to wait for Galaxy Note 2.

But if you're from Galaxy S 1 I9000, then yes you'll feel the differences with Galaxy Note 1 N7000.

How do you feel IF u drive Waja now, then you change to drive Hummer? is it worth? 

For me, from every aspect, i think note is better than sgs especially bigger screen, better battery life, 10x better GPS, smooth and virtually no lag at all.

** i used to drive Waja b4 bro 

NO! DO NOT BUY YOUR NOTE FROM DIGI!
As SME Notes don't come in pink.

Go look around in garage sales section, can find pink ap Notes for cheap.

I've tried it. The Premium Suite was great, the only thing I didn't like was TouchWiz interface.
Like Uncle Benny said, use Apex or Nova launcher and all lagness gone. You should give it a try bro.