Originally posted by ChristianRock I also agree on the 77 vs the 70. It's more expensive but the 70 is closer to the 50 so you'll end up picking only one if them to take with you. I think with the 77, being longer, there's more chance you'll need both. There's also the DFA 100 f2.8 that is even longer and might satisfy your tele needs for now, plus closer portraits and macro at a greater distance. And it's WR. As much as I love the pics I see that were taken with the 77, the 100 might be just as appealing IQ wise, and goes well in a 35-50-100 setup to use along the 16-45 (which covers well the wide end)
The images the FA77 produces are substantially different from the DA50. The FA77 performs well enough that you don't lose much IQ by shooting wide open. The f/1.8 aperture makes is useful in many more situations, so that (at least to me) it's nearly as versatile as a DA*50-135 - despite not having the zoom.
The D FA 100 WR is a great lens, and the rounded aperture doesn't hurt either. If you're shooting macro it's nearly unbeatable (short of a couple of exotic MF ~100 macros for around $2000). And it takes good non-macro shots too. But outside of macros, I'd say the FA77 is more versatile. I've replaced the FA77 with the FA*85 and it's my most used lens (the FA77 was close to being the most used before I got it).
In other words, saving for a used FA77 makes sense.