Why are you so keen on getting advantage on nvidia cards? Surely that can't be good for distribution as most miners don't have nvidia cards?
IMHO everyone should be able to use the same guns.
nVidia hardware has always looked pretty bad (for mining) until December 2013 when finally scrypt performance of cudaminer finally matched AMD's R290 cards. However high end nVidia GPUs were way too expensive in comparison.
All of this has changed in February only with the inexpensive and power efficient 750Ti cards... Why can't we make AMD look bad for a while? We need to make up for years of humiliation

Christian
Are you Nvidia fanboy lol?

People should always buy the best product they can, no matter what brand it is. Buying 750Ti is good idea right now. Who knows what's the best in next autumn?