This is very similar to my cheesecake recipe and I too have been told I make the best cheesecake!
Instead of putting the sour cream into the filling, I combine it with 3 TBS of sugar and spread it as a topping after the cheesecake has cooled. I use turbinado sugar (unrefined) and sometimes put strawberries on the top.
This is a variation on an epicurious recipe called Three Cities of Spain Cheesecake.

Of course, now that I'm lactose intolerant, I'm on the hunt for a similarly delicious non dairy cheesecake recipe. I think I'll be searching for a while...
ST