I really don't need threads like these--not because I have a problem with them, but because I just can't afford them right now.
However, I love to read them and ponder what I have vs. another line up, and then I need another 2 G's. :P
I usually go for my 16-50, DA 35, FA 50 and DA 70 when traveling. I know I have an overlap, but I take those because each lens very different characteristics and the primes are small enough to pack without taking up too much space or adding weight.
If I know I'm shooting landscapes, I take the DA 14, DA 16-50, DA 35 and my Q'Ray 70-300.
On the wide end, I wonder if I'd be better off with the 12-24, but I really like the close focusing ability of the DA 14. It comes in handy when I'm indoors or when things get a little boring.
Of course, I wonder if I'd like the FA 31 over the DA 35.
I'm content with my DA 70, but that's probably because I've never used the FA 77. :P
I'd like a 70/80-200 F2.8 to shoot action, but what I keep reading about the Tammy and Sigma options have been turning me off. I'd love a DA* version (not that I could afford it, but if one were out, I'd certainly start saving, or at least rent it when I needed it).
A new AF 135mm 1.8 (I'd even take a little slower) would effin' rock.
So...ideal lens line up? DA 14, DA 16-50, FA 31, FA 50, DA 70, DA(?) 135, DA* 70-200. And for a macro, either the DA 35 or the Tammy 90mm.