I'd definitely recommend MFNR, or Multi-Frame Noise Reduction. ; It's the same technology as the 'HHT' or Hand Held Twilight function already on the NEX, but it steps it up a notch by allowing you to use it in any of the PASM modes, with full user control over any or all camera parameters and settings. ; HHT stacks 6 frames, but as a scene mode, with no ability to set ISO, focus point, metering area, etc. ; With MFNR, you can do 6-frame stacking with all the control you want (My DSLR has the MFNR feature, while my NEX has the HHT - I use them both, but LOVE MFNR more!). The time lapse functionality looks cool too - with the ability to use it in video and stills modes.
Probably the only paid one that I wouldn't need to have right away is the bracketing one. ; All of the other ones seem to have a lot of cool potential.
Got the time-lapse app but Cinematic Photo is refusing to allow me to finish the purchase on both my PC AND on the NEX itself. ; I let Sony know but who knows what is wrong with it...
Tried it the next day and it worked. http://www.youtube.com/watch?v=zU0Lg93BkzM#wsCinematic Style Test Just a quick and dirty test of Cinematic Photo NEX-6, 16-50 PZ lens Starring: Diet Dr Pepper Cherry