well i dont think cuda is that important to me since i only use cs products maybe 2 or 3 times a month for personal projects, but its nothing super insane professional over the top
Dont Listen to Rabidz, The 780 is in what most people do a better card than a 290. Its cooler and has more head room. it really depends on if you need an extra 1gb of vram. But at 1080p, the 780 is the best choice. The 290x is more on par with the 780. However again hotter and priced higher due to High demand for mining.
At 509, This is a great card. http://www.newegg.com/Product/Product.aspx?Item=N82E16814130952
If you can spend another 50, This card is well worth the larger cooler and better VRM. http://www.newegg.com/Product/Product.aspx?Item=N82E16814130943
780's with a great cooler can overclock like hell and when bypassing the voltage limiter will beat out even a 780 ti ACX. Well worth getting.
Well a R9-290 non reference, is a better performing card then a GTX780, in allmost all games.. But if you use adobe products, then the cuda cores of Nvidia come realy handy.
Also looked at the price point, at the monent. the R9-290 will be out of budget, that is also something to keep in mind. the GTX780 can be found under $500, but a R9-290 is arround $600 for a non reference model.
i have no idea but i see some GTX780Ti dropped in price alot, they where at $800 price point, now you can get a Msi GTX-780Ti gaming, or an EVGA GTX-780ti super clocked, for $699
I'm with Angel here, once you start getting above the GTX760/R9 270X area of cards nVidia is currently a better choice in my opinion. There's no doubt that the AMD cards are nice, but with the current 'coin mining that is driving the AMD prices up makes them not really worth it for anything other than mining. I have nothing against AMD as a company, I personally have an HD6950 that I love, but the prices have cut them off my list of current cards. nVidia's CUDA works better in Adobe products as well.
Nvidia is just the more cost effective company right now (you'd be called crazy a year ago if you said that) in the states. Amd cards prices are way to high. Getting an R9 290x which is slower than a 780 ti can cost $200 more because of litecoin mining.