I think it depends on the price you pay for it.
I bought the note about 2 months ago for $199 from Amazon.
At that time I didnt have to pay tax and I was able to sell my iPhone 4S for $575 so it made sense for me to do it.
The new note 2 will probably be $299 plus tax so you should take that into consideration.
If it was me, I think I would wait but then AT&T sometimes has refurbished units for $50 which I would say is worth it if you can still get it.
Wait until the new one comes out. The Note 1 will fall in price. I like the original Note. Get a custom ROM to get rid of bloatware, and it is awesome.
I'm on my 30days. Just switched to att from Verizon. Was going to get the note but the only thing in stock was the sg2. It would be at 199 but I will be buying the note2 at full retail anyway.